A field-level walkthrough of Type of Bill codes, the 5-day NOA deadline, PDGM payment rules, LUPA risk, HHVBP, and the coding details that decide whether a 30-day claim gets paid in full.

A field-level walkthrough of Type of Bill codes, the 5-day NOA deadline, PDGM payment rules, LUPA risk, HHVBP, and the coding details that decide whether a 30-day claim gets paid in full.

A field-level walkthrough of Type of Bill codes, the 5-day NOA deadline, PDGM payment rules, LUPA risk, HHVBP, and the coding details that decide whether a 30-day claim gets paid in full.

QUICK OVERVIEW ✦  Home health is not paid visit-by-visit. Under the Medicare Home Health Prospective Payment System (HH PPS), one adjusted block rate covers a patient’s entire 30-day period, so billing outcomes ride almost entirely on clinical documentation. ✦  Type of Bill codes track the episode: 32A opens the admission window (Notice of Admission), 329 is the final claim that triggers payment, and 327 corrects a claim already paid. ✦  The 5-day NOA rule is the costliest trap. A 32A must be accepted by the MAC within 5 calendar days of the start of care, or the agency loses roughly 1/30th of the payment for every day it’s late — about $67.94/day on the 2026 base rate. Thirty or more days late wipes the period out completely. ✦  Form locators have to mirror the clinical chart: Occurrence Code 50 ties to the OASIS completion date, Point of Origin (FL 15) and Patient Status (FL 17) show where the patient came from and went, and Value Codes 61 and 85 (FL 39-41) set the local wage adjustment. ✦  OASIS is now required for every skilled patient regardless of payer as of July 1, 2025 — treating it as a Medicare-only requirement is a compliance gap. ✦  2026 base rate: $2,038.22 for quality-compliant agencies ($1,998.41 if quality reporting is missed). A 2.4% update is offset by a 1.023% permanent cut and a 3.0% temporary cut, leaving the base rate down about 0.93% and the industry down roughly 1.3% overall.

Billing for home-based care is not a matter of filling out a form and waiting for a check. It is a compliance-heavy discipline where a single overlooked digit, a missed cutoff, or a mismatched date can throttle an agency’s cash flow, invite an audit, or wipe out an entire period’s earnings. Because the stakes are this high, agencies need a working knowledge of every code, deadline, and payment mechanic covered below — not just a general sense of how billing works.

This guide breaks down the full 2026 home health billing and coding picture: the newest rate cuts, the Type of Bill lifecycle, the Notice of Admission deadline, the form locators auditors check first, the PDGM payment engine, HIPPS codes, discipline-specific HCPCS codes, telehealth reporting, HHVBP, LUPA thresholds, consolidated billing exposure, and the separate rules that apply once Medicaid enters the picture.

What Home Health Billing Actually Covers

Home health billing is the process of converting in-home clinical care into a reimbursable insurance claim. Where standard medical billing usually charges for a single office visit or one procedure, home health billing has to account for an entire arc of care delivered across multiple visits, disciplines, and weeks.

A nurse, therapist, or aide visits a patient confined to their home. Every visit, every diagnosis, and every supply used has to be logged against the correct code. Billing and coding staff then translate that record into a claim and route it to whichever payer is responsible — Medicare, a

state Medicaid program, or a commercial insurer such as Aetna, Cigna, Humana, BCBS, or UnitedHealthcare.

The claim has to demonstrate two things at once: that the care was medically necessary, and that it followed a physician’s plan of care. Get both right, and the agency collects what it earned.

state Medicaid program, or a commercial insurer such as Aetna, Cigna, Humana, BCBS, or UnitedHealthcare.

The claim has to demonstrate two things at once: that the care was medically necessary, and that it followed a physician’s plan of care. Get both right, and the agency collects what it earned.

Why This Type of Billing Behaves Differently

A standard outpatient clinic bills per encounter — a visit happens, a code or two gets attached, and the payer reimburses a fixed amount for that service. Home health does not work that way. Under HH PPS, payment is episodic and aggregated, built around a 30-day period rather than an individual visit, and the amount paid is shaped heavily by how well the clinical documentation supports it.

Because payment covers the whole period rather than each visit, billing teams are entirely dependent on clinical teams staying on schedule. A late assessment or an outdated code used by a therapist can jeopardize the payment for the full 30 days, not just that one visit

A standard outpatient clinic bills per encounter — a visit happens, a code or two gets attached, and the payer reimburses a fixed amount for that service. Home health does not work that way. Under HH PPS, payment is episodic and aggregated, built around a 30-day period rather than an individual visit, and the amount paid is shaped heavily by how well the clinical documentation supports it.

Because payment covers the whole period rather than each visit, billing teams are entirely dependent on clinical teams staying on schedule. A late assessment or an outdated code used by a therapist can jeopardize the payment for the full 30 days, not just that one visit.

TAKEAWAY:  Agencies without three to six months of operating reserve are especially exposed — a single delayed period of payment can strain the whole organization. Keep the NOA and OASIS timelines tight.

Type of Bill (TOB) Codes: The Episode Lifecycle

Every institutional claim — whether filed on a UB-04 or transmitted electronically through the Fiscal Intermediary Standard System (FISS) — carries a three-digit Type of Bill code in Form Locator 4 that tells Medicare exactly what kind of transaction is being submitted.

Think of it as the subject line on a message to the payer: 32A announces a new admission and asks Medicare to open a file; 329 reports that the 30-day period is complete and requests payment; 327 flags a correction to a claim that has already been paid.

Every institutional claim — whether filed on a UB-04 or transmitted electronically through the Fiscal Intermediary Standard System (FISS) — carries a three-digit Type of Bill code in Form Locator 4 that tells Medicare exactly what kind of transaction is being submitted.

Think of it as the subject line on a message to the payer: 32A announces a new admission and asks Medicare to open a file; 329 reports that the 30-day period is complete and requests payment; 327 flags a correction to a claim that has already been paid.

TOB Code	Stage	What It Communicates
32A	Notice of Admission	Opens the patient’s active care window and marks the agency as the primary home health provider. Not itself a payable claim.
329	Final Claim	Reports the completed 30-day period — visits, disciplines, supplies — and requests final payment.
327	Adjustment Claim	Reopens and restates a claim already paid, to correct an error such as a missed visit or wrong discipline code.

The Four Phases of a Home Health Episode

• Admission and the 32A. The 32A opens the episode in Medicare’s systems and signals that the agency is now clinically and financially responsible for the patient’s home care. It carries no payment on its own, but a late or rejected 32A undermines every claim that follows.
• Ongoing care delivery. While the patient is under care, each visit and service gets logged in the agency’s EHR. This running record becomes the raw material for the final claim.
• Period close-out and the 329. At the end of the 30-day period, the agency compiles every visit, code, and supply into a 329 claim, which Medicare uses to calculate the payment.
• Corrections via the 327. Corrections via the 327. If an error surfaces after payment — a missed visit, a wrong discipline code, a diagnosis update — the agency files a 327 rather than starting over, and the provider’s core enrollment is unaffected.

The Billing Sequence, Step by StepThe Billing Sequence, Step by Step

• Opening the episode. Intake processes the referral, a clinician completes the first visit, and the biller files the 32A immediately to open the formal care window.
• Logging every visit. Nurses, therapists, and aides document each encounter in the EHR with accurate HCPCS and revenue codes.
• Filing the 30-day claim. At period’s end, the team consolidates every visit and service into a 329 claim and submits it for payment.
• Correcting paid claims. If an internal audit turns up a data error, the team files a 327 to correct the record and adjust payment without disturbing enrollment.

The 5-Day Notice of Admission Rule

This single deadline causes more revenue loss for growing agencies than almost anything else in home health billing. The 32A must be submitted and accepted by the agency’s Medicare Administrative Contractor within 5 calendar days of the start-of-care date.

The clock starts on day one, the moment a billable service is delivered. From there, the agency has five days to get the NOA filed and accepted inside FISS. If care begins October 1, for example, the NOA is due by October 6.

What a Late Filing Actually Costs

Every day past the deadline strips a proportional share of the 30-day payment, calculated as the number of days between the start-of-care date and the date the NOA is accepted.

Using the 2026 standard base rate of $2,038.22, one day of coverage is worth roughly $67.94 ($2,038.22 ÷ 30). If the NOA is filed nine days late, the penalty is 9 × $67.94 = $611.46 lost from that period’s payment. Push the delay to 30 days or more, and the entire period pays nothing — regardless of how much clinical work was actually delivered.

When the Penalty Can Be Waived

MACs recognize only a narrow set of exceptions, and each requires Condition Code KX plus time-stamped documentation on the final claim:

• Documented, widespread outages of the FISS portal or the MAC’s intake systems.
• Retroactive Medicare eligibility, where the patient was originally private-pay or covered by other insurance and Medicare coverage was later granted back to the admission date.
• Federally or state-declared disasters — hurricanes, major flooding, and similar events — that physically disrupt agency operations.Federally or state-declared disasters — hurricanes, major flooding, and similar events — that physically disrupt agency operations.

Form Locators That Auditors Check First

A clean claim is one where every relevant form locator matches the underlying clinical record exactly. These are the fields Medicare’s automated systems and human auditors cross-reference most often.

Occurrence Code 50 — The OASIS Link

Form Locators 31 through 34 must carry Occurrence Code 50 alongside the exact completion date of the patient’s OASIS assessment. If that date does not match the timestamp on the OASIS file transmitted to the state, the claim is rejected outright.

TAKEAWAY:  As of July 1, 2025, OASIS applies to every skilled home health patient regardless of payer — Medicare, Medicaid, Medicare Advantage, and commercial plans alike. CMS revised the Conditions of Participation to reflect this, replacing ‘beneficiary’ with ‘patient’ throughout. Agencies still treating OASIS as Medicare-only now have a compliance gap that shows up in both surveys and audits.

Point of Origin — Form Locator 15

 

Code	Meaning	Payment Impact
2	Physician Referral	A community physician identifies a decline and orders home health services directly.
4	Transfer from Hospital	Patient enters care straight from an inpatient stay — places the episode in the higher-paying institutional tier.

Patient Status — Form Locator 17

 

Code	Meaning
01	Discharged to home — goals met, no further care needed.
03	Transferred to a skilled nursing facility — patient’s needs exceeded what home care could provide.
47	Transferred to another home health agency — the 30-day payment is split between both agencies based on the exact transfer date, requiring tight coordination.

Value Codes 61 and 85 — Wage-Area Multipliers

Reimbursement is not flat across the country. Value Code 61 (Form Locators 39-41) carries the Core-Based Statistical Area code tied to the patient’s home address, while Value Code 85 carries the FIPS state and county code. An outdated address or wrong county code understates or overstates the wage adjustment — and an overpayment discovered later can be clawed back during audit.

Reimbursement is not flat across the country. Value Code 61 (Form Locators 39-41) carries the Core-Based Statistical Area code tied to the patient’s home address, while Value Code 85 carries the FIPS state and county code. An outdated address or wrong county code understates or overstates the wage adjustment — and an overpayment discovered later can be clawed back during audit.

The 2026 PDGM Payment Engine

The Patient-Driven Groupings Model sets payment based on diagnosis codes and functional scores rather than volume of visits. For 2026, the underlying rates shifted under the CY 2026 HH PPS final rule.

Base Rates for a Standard 30-Day Period

Rate Type	Amount	Condition
Quality-Compliant Rate	$2,038.22	Agency reports all data required under the Home Health Quality Reporting Program.
Non-Compliant Rate	$1,998.41	Missed quality reporting triggers a 2-point reduction to the market basket update.

Why the Net Payment Is Lower Than It Looks

A 2.4% market basket update sounds like growth, but two offsetting adjustments erode most of it:

• Permanent behavioral adjustment: a standing 1.023% cut meant to offset billing behavior changes observed in the early years of PDGM.
• Temporary adjustment: a one-year 3.0% cut aimed at recovering past overpayments; by rule, it does not carry forward into the 2027 base rate.
• Net effect: the base rate is down roughly 0.93% from 2025, and CMS projects an aggregate industry-wide reduction of about 1.3% for 2026 — meaning near-flawless coding is required just to hold revenue steady.

HIPPS Codes: The Payment Barcode

 

A HIPPS code condenses an entire OASIS assessment into a five-character string reported under Revenue Code 0023. Rather than reviewing every chart note individually, Medicare’s system reads the HIPPS code and immediately knows the patient’s acuity and the size of the 30-day payment it should generate — functioning much like a shipping barcode that encodes weight, distance, and price in one scan.

Revenue and HCPCS Codes by Discipline

Every discipline that touches a case bills under its own revenue code and matching HCPCS code, with time itemized in 15-minute units.

Revenue Code	HCPCS	Discipline	Unit
055X	G0299	Registered Nurse (RN) — skilled visit	15 min
055X	G0300	Licensed Practical Nurse (LPN) — skilled visit	15 min
042X	G0151	Physical Therapist (PT)	15 min
042X	G0157	Physical Therapy Assistant (PTA)	15 min
044X	G0152	Occupational Therapist (OT)	15 min
044X	G0158	Occupational Therapy Assistant (COTA)	15 min
043X	G0153	Speech-Language Pathologist (SLP)	15 min
056X	G0155	Medical Social Worker (MSW)	15 min
057X	G0156	Home Health Aide (HHA)	15 min

Why Discipline Codes Cannot Be Interchanged

G0299 (RN) and G0300 (LPN) are not interchangeable, and neither are G0151 (PT) and G0157 (PTA). Billing every nursing visit under the RN code regardless of who actually performed it is billing fraud, and payer audits routinely cross-check claim codes against payroll records for the same date and time slot.

TAKEAWAY:  If a claim shows an RN visit but payroll shows an LPN clocked in for that slot, the mismatch is caught. Medicare recoups 100% of the claim, and repeat instances can trigger heavier penalties on top of the recoupment.

Reporting Telehealth Visits

Medicare requires a record of every video, phone, or remote-monitoring check-in, even though these codes currently reimburse at $0.00. They exist purely so CMS can track how agencies use virtual care.

Code	Type	Example
G0320	Two-way audio and video telehealth visit	A physical therapist evaluates joint mobility over live video.
G0321	Audio-only telehealth check-in	A nurse calls to review medications or check on a healing incision.
G0322	Remote patient monitoring data collection	Readings from a digital scale or blood pressure cuff sent to the agency portal.

These G-codes belong only on 032X home health claims, paired with the revenue code for the discipline involved (042X, 043X, 044X, 055X, 056X, or 057X).

TAKEAWAY:  Because these codes pay nothing, they’re easy to skip — but skipping them creates a mismatch between the clinical record and the claim, which is exactly the kind of inconsistency automated review software is built to flag.

HHVBP: A Payment Swing of Up to 5%

The Home Health Value-Based Purchasing Model is now mandatory nationwide, covering every Medicare-certified agency in all 50 states, DC, and the territories. Where PDGM and clean coding determine whether a claim gets paid, HHVBP determines how much of that payment the agency actually keeps.

CMS adjusts Medicare payments up or down by as much as 5%, based on how an agency’s quality scores compare against peer agencies in its volume group. Those scores draw on OASIS measures, claims-based measures, and HHCAHPS patient experience surveys.

TAKEAWAY:  The adjustment lags performance by about two years — 2026 payments reflect 2024 quality scores, and 2026 performance will shape 2028 payments. A 5% swing stacked on top of the existing 2026 rate cuts can turn a thin margin negative, which makes OASIS accuracy a revenue function, not only a clinical one.

LUPA: The Single Biggest Payment Risk

The Low Utilization Payment Adjustment replaces the full 30-day payment with a much lower per-visit rate whenever a patient falls short of their case-mix group’s visit threshold. Under PDGM, every one of the 432 case-mix groups carries its own threshold, typically between 2 and 6 visits.

Meeting or exceeding the threshold earns the full period payment, adjusted for location and acuity. Falling even one visit short switches the entire period to per-visit reimbursement — a difference that can erase the agency’s margin on that patient.

Worked Example

Say a case-mix group carries a 5-visit LUPA threshold, and the agency delivers 4 visits because the patient felt well and canceled the fifth. The threshold is missed, so the standard $2,038.22 payment is replaced with the 2026 per-visit skilled nursing rate of about $176.96:

Item	Value
Skilled nursing per-visit rate (2026)	$176.96
Visits delivered	4
LUPA payout (4 × $176.96)	$707.84
Standard 30-day payment	$2,038.22
Revenue lost to the LUPA hit	$1,330.38

TAKEAWAY:  One missed visit cost this agency $1,330.38. CMS reset LUPA thresholds for 2026 using CY 2024 claims data, and several clinical groups now require one additional visit compared with last year — confirm the current threshold for each HIPPS code before assuming last year’s number still applies.TAKEAWAY:  One missed visit cost this agency $1,330.38. CMS reset LUPA thresholds for 2026 using CY 2024 claims data, and several clinical groups now require one additional visit compared with last year — confirm the current threshold for each HIPPS code before assuming last year’s number still applies.

Consolidated Billing Exposure

While a patient is inside an agency’s active 30-day window, the agency is financially responsible for nearly everything the patient receives — supplies, therapy tools, and outside services alike. CMS maintains a Consolidated

Billing Master Code List covering thousands of items, from wound care supplies to outpatient therapy sessions.

If a patient visits an outside supplier or independent clinic during that window and receives something on the list, the outside provider’s direct claim to Medicare is automatically rejected, because the agency holds the active admission file. Left unmanaged, those outside providers redirect the bill to the agency instead — sometimes for services never ordered or authorized.

A Three-Part Defense

• Verify before ordering. Check any supply or equipment code against the CMS Master Code List before it’s used in the field.
• Lock down vendor agreements. Restrict patients to approved, contracted vendors so pricing is known in advance if an item needs to be bundled into a claim.
• Audit the Common Working File weekly. Review the CWF regularly to catch conflicting claims that overlap with an active care window before they become a billing dispute.

Medicaid and State-Specific Rules, Including EVV

Medicare billing follows one national rulebook. Medicaid does not — codes, payers, and required technology shift by state, so any Medicaid work should be treated as an entirely separate track.

• Codes and payers vary by state. Many states skip Medicare’s G-codes in favor of their own HCPCS Level II codes (T1021, T1022, and various S-codes), and claims often route through a managed care organization rather than the state directly. Prior authorization rules, allowed units, and rates all differ, so current requirements should be confirmed with the specific state agency or MCO.
• Electronic Visit Verification is mandatory. Under Section 12006 of the 21st Century Cures Act, every state must use EVV for Medicaid-funded personal care and home health visits, capturing the service type, patient, caregiver, date, location, and visit start/end times.
• EVV enforcement tightened in 2026. Many states moved from soft edits, which warned but still paid, to hard edits, which reject non-compliant claims outright until corrected and resubmitted. High rates of manually entered (rather than real-time) check-ins are increasingly treated as a fraud signal that can trigger reviews or payment holds.
• Watch for Review Choice Demonstration states. Where active, RCD adds pre-claim or post-payment review with a tracking number required on the claim. Because the list of participating states changes, current status should be confirmed with the MAC.

 

Final Pre-Submission Checklist

Before a final claim goes out, confirm each of the following:

• TOB 32A was submitted and accepted within the 5-day NOA window.
• Occurrence Code 50 matches the OASIS completion timestamp exactly.
• OASIS is captured for every skilled patient, regardless of payer, per the July 2025 requirement.
• Value Codes 61 and 85 reflect the patient’s current, verified address.
• RN and LPN visits, and PT and PTA visits, are billed under the correct, distinct codes.
• Visit counts clear the current 2026 LUPA threshold for the patient’s case-mix group.
• Telehealth encounters are logged under G0320-G0322 even though they reimburse at $0.00.
• EVV records reconcile with each visit for Medicaid claims, to clear hard-edit review.
• HHVBP quality measures are being actively tracked, since they drive up to a 5% payment swing.

Home health reimbursement in 2026 rewards precision. The margin between a fully paid 30-day period and a costly rejection or LUPA hit often comes down to a single date, a single code, or a single missed visit — which is exactly why billing and clinical documentation have to move in lockstep from admission through final claim.