Home Health Care Billing Guidelines: The 2026 Compliance Playbook for Agencies

Why home health care billing guidelines are different

Home health billing rules sit at the intersection of clinical documentation, federal regulation and claims mechanics. A claim is only as strong as the chart behind it. If the patient is not homebound, if the face-to-face encounter is missing a date, or if the primary diagnosis does not match the plan of care, Medicare can deny or recoup payment, sometimes years later.

That makes home health care billing guidelines a compliance topic as much as a revenue topic. This playbook walks through the rules every agency needs to follow in 2026, from eligibility through final claim, plus the audit programs that test whether you followed them.

Guideline 1: Confirm Medicare eligibility before the first visit

Under the Medicare Benefit Policy Manual, Chapter 7, a patient qualifies for the Medicare home health benefit when all of these are true:

1. The patient is confined to the home (homebound). Leaving home requires considerable and taxing effort, or the patient needs an assistive device, special transportation or another person's help to leave. Short, infrequent absences for medical care, religious services or adult day care do not disqualify the patient.

2. The patient needs skilled services. That means intermittent skilled nursing, physical therapy, speech-language pathology or continuing occupational therapy.

3. The patient is under the care of a physician or allowed practitioner. Since the CARES Act, nurse practitioners, clinical nurse specialists and physician assistants can certify home health and establish the plan of care.

4. A plan of care is established and periodically reviewed by that physician or allowed practitioner.

5. A face-to-face encounter occurred related to the primary reason for home care.

Check eligibility in the HIPAA Eligibility Transaction System (HETS) or your MAC's portal before admission. Look for open hospice elections, another agency's open period, Medicare Advantage enrollment and Medicare Secondary Payer flags.

Guideline 2: Get the certification and face-to-face encounter right

Certification errors are one of the most frequent reasons home health claims fail medical review. Under 42 CFR 424.22, the certifying practitioner must attest that the patient meets each eligibility criterion.

The face-to-face encounter must take place no more than 90 days before or 30 days after the start of care. It must relate to the primary reason the patient needs home health services. Starting with the CY 2026 final rule, CMS allows the encounter to be performed by a physician, nurse practitioner, clinical nurse specialist, physician assistant or certified nurse-midwife.

The certifying practitioner's own medical record, or the acute or post-acute facility record, must support homebound status and skilled need. Agency-created documents can be incorporated, but only if the practitioner signs and adopts them. A tidy cover form with no supporting chart notes will not survive review.

Guideline 3: Follow the PDGM payment structure

Since January 1, 2020, Medicare pays home health under the Patient-Driven Groupings Model (PDGM). Each 30-day period falls into one of 432 case-mix groups based on five factors:

• Admission source: community or institutional (an acute or post-acute stay in the 14 days before the period).

• Timing: early (first 30-day period) or late (every period after).

• Clinical grouping: one of 12 groups, assigned from the primary ICD-10-CM diagnosis.

• Functional impairment level: low, medium or high, scored from OASIS items.

• Comorbidity adjustment: none, low or high, based on secondary diagnoses.

Certification periods remain 60 days long, but payment is made for each 30-day period. That means two final claims per certification period in most cases.

The CY 2026 national standardized 30-day rate is $2,038.22. If a period has fewer visits than its LUPA threshold, which ranges from two to six visits, Medicare pays per visit instead. Outlier payments are available for unusually costly periods, capped at 10% of an agency's total PPS payments.

Guideline 4: Submit the Notice of Admission on time

The NOA (type of bill 032A) must be submitted within five calendar days of the start of care. It is filed once per admission, not once per period. If it arrives late, Medicare reduces the wage-adjusted period payment by 1/30 for each day from the start of care until the NOA is received.

Exceptions exist for circumstances outside the agency's control, such as a MAC system outage. To request one, append modifier KX to the HIPPS code on revenue code 0023 and keep documentation that supports the exception.

Guideline 5: Keep OASIS and the claim aligned

The Outcome and Assessment Information Set (OASIS-E1) drives the functional impairment level and supports the comorbidity and clinical picture. Medicare matches each final claim to an OASIS assessment in iQIES.

Good OASIS billing practice means:

• Completing the start of care comprehensive assessment within five days after start of care.

• Reporting occurrence code 50 with the M0090 completion date on every final claim.

• Submitting OASIS to iQIES within 30 days of completion.

• Making sure the diagnoses on the claim match the diagnoses on the OASIS.

When OASIS and the claim disagree, the claim may return to provider or pay at the wrong group.

Guideline 6: Code diagnoses accurately and specifically

Under PDGM, the primary diagnosis decides the clinical grouping. Some ICD-10-CM codes are not accepted as primary because they are vague, symptom-based or describe a condition that does not justify home health on its own. CMS publishes these on its PDGM grouping tool as codes that will not group. A claim with an unacceptable primary diagnosis is returned.

Follow the ICD-10-CM Official Guidelines for Coding and Reporting, sequence the condition that is the chief reason for home care first, and code to the highest specificity the record supports. Secondary diagnoses matter too, because they drive the comorbidity adjustment.

Guideline 7: Document every visit as if it will be audited

Each visit note should show what skilled service was provided, why it required a skilled professional, the patient's response and progress toward plan-of-care goals. Notes should also reflect ongoing homebound status.

Common documentation gaps include:

• Copy-and-paste notes that do not change from visit to visit.

• Missing signatures or dates on orders and visit notes.

• No measurable goals for therapy.

• Skilled need claimed for services an aide could safely provide.

• Homebound status stated as a checkbox with no supporting detail.

Guideline 8: Bill only with signed orders

The plan of care and any verbal or interim orders must be signed and dated by the certifying physician or allowed practitioner before the final claim is submitted. Build an orders-tracking workflow so unsigned orders do not hold up cash or, worse, get billed without signatures.

Guideline 9: Know the audit programs that test your billing

Several Medicare review programs focus on home health:

Agencies in RCD states, including Texas, choose between 100% pre-claim review and 100% postpayment review, with relief options for high affirmation rates.

Guideline 10: Apply payer-specific rules for non-Medicare claims

Traditional Medicare is only part of the picture. Medicare Advantage plans often require prior authorization, cap visits and pay per visit or under their own episodic rules. Medicaid programs and managed long-term care plans have state-specific billing and electronic visit verification (EVV) requirements, especially for personal care and aide services under the 21st Century Cures Act. Commercial payers may use revenue codes and HCPCS codes differently.

Keep a payer matrix that lists authorization rules, timely filing limits, billing formats and appeal deadlines for every contracted plan.

Guideline 11: Protect patient data and avoid fraud risk

Home health billing involves protected health information on every claim. HIPAA privacy and security rules apply to the agency and to any billing vendor, which must sign a business associate agreement. On the fraud side, the False Claims Act and Anti-Kickback Statute apply to billing for services that were not provided, not medically necessary or obtained through improper referral arrangements. A written compliance program, aligned with OIG guidance for home health agencies, is the best protection.

Turning guidelines into a repeatable process

The agencies with the cleanest claims treat these guidelines as a workflow, not a reference document. Intake verifies eligibility. Clinicians document to the standard. Coders validate the primary diagnosis and OASIS consistency. Billing checks NOA status, orders and occurrence codes before each claim. Leadership reviews denial trends monthly.

If you do not have the staff to run every step, a specialized home health billing company can take over the parts that slip. Many agencies compare home health billing companies in USA on how well they handle audits, not just routine claims.

Regional rules matter too. California agencies that use home health billing services in the Coachella Valley must manage Medi-Cal managed care requirements. Agencies focused on home health billing in Houston operate inside the Review Choice Demonstration because Texas is an RCD state. Providers working with home health billing companies in NYC navigate New York Medicaid, MLTC plans and EVV mandates.

The Trucare Home health billing service builds these guidelines into daily pre-bill audits, so documentation and coding gaps are caught before the claim goes out.

FAQs

Who can certify a patient for Medicare home health? A physician, nurse practitioner, clinical nurse specialist or physician assistant can certify eligibility and establish the plan of care.

How long is a home health payment period? Payment is made per 30-day period. The certification period is 60 days, so most certifications include two payment periods.

What happens if the NOA is late? Medicare reduces the period payment by 1/30 for each late day unless an exception applies.

Is Texas part of the Review Choice Demonstration? Yes. Texas, Illinois, Ohio, North Carolina, Florida and Oklahoma are RCD states, and the demonstration has been extended through May 2029.

Sources: CMS Review Choice Demonstration for Home Health Services; Palmetto GBA: RCD extended five more years; IHA CY 2026 HH PPS final rule summary; CGS: Submitting a final claim under PDGM.