Under Original Medicare, home health (skilled nursing, physical therapy, speech-language pathology, and related services in the home when you meet Medicare’s homebound and skilled-need rules) is paid through a different clock than a hospital or skilled nursing facility stay. CMS’s current model groups payments into 30-day periods under the Patient-Driven Groupings Model (PDGM)—often still described in patient materials as an episode of care—with physician (or allowed practitioner) certification and recertification. Benefit-period orientation for hospitals: Medicare Part A benefit period basics. SNF day bands: Skilled nursing benefit period basics. Why observation status can change the post-acute path: Observation status vs inpatient basics. Bill habits: Medical bills and insurance.
This page is the home health episode / 30-day period and recertification slice—not the SNF 100-day table and not long-term custodial home care (which Medicare generally does not treat like skilled home health).
Episode, 30-day periods, and recertification
| Idea | What it usually means | Watch-out |
|---|---|---|
| Skilled home health | Intermittent skilled nursing and/or therapy under a plan of care while you are homebound | Custodial-only help (bathing/meals alone) is not the same benefit |
| 30-day payment period (PDGM) | Medicare pays the HHA for timed periods tied to clinical grouping and timing | Patient cost-sharing rules differ from SNF daily coinsurance |
| Certification | A physician or allowed practitioner certifies need and a plan of care | Missing signatures can delay or deny claims |
| Recertification | Further periods need renewed certification when skilled care continues | Agencies should explain when your “episode” or period renews |
| Face-to-face / encounter rules | Medicare requires qualifying encounters for certification in many cases | Confirm with the agency what documentation they already have |
| Benefit period (hospital/SNF) | Separate Part A construct with deductibles and SNF day bands | Do not assume home health uses the same 60-day reset math |
CMS and Medicare.gov publish current home health coverage and billing rules. Use your Medicare Summary Notice (MSN) and the home health agency (HHA) billing office for your dates—not a blog table alone.
How Medigap and Advantage change the bill
On Original Medicare, qualifying home health is often described with $0 Part A/B coinsurance for covered services when rules are met (you may still owe for non-covered items, some DME, or services outside the plan of care). Standardized Medigap letters matter more for hospital and SNF gaps than for classic $0 home health coinsurance—but read your outline anyway.
Medicare Advantage plans use plan home-health networks, prior auth, and cost-sharing plus MOOP—not Original Medicare’s PDGM table blindly (Medicare Advantage MOOP basics). Read the Evidence of Coverage.
Worked example: two 30-day periods after discharge
Avery has Original Medicare after a qualifying inpatient stay (not observation-only). Avery is homebound and needs skilled nursing wound care plus physical therapy. The HHA starts care on March 3.
| Calendar | What Avery tracks |
|---|---|
| March 3 – April 1 | First 30-day period; plan of care and certification on file |
| Around day 30 | Agency and practitioner review whether skilled need continues |
| April 2 – May 1 | Second 30-day period after recertification |
| May 5 | Avery is no longer homebound and skilled goals are met; HHA discharges |
Avery’s MSN shows home health claims for those periods with $0 coinsurance for covered visits in this illustrative Original Medicare case. Separately, Avery still watches a hospital benefit period and any later SNF stay under different rules. If Avery had been on observation instead of inpatient, SNF eligibility might have failed even though home health could still be possible when other criteria are met—status questions belong with the hospital and SHIP (Observation status vs inpatient).
Practical habits
- Ask the HHA: “Am I starting a new 30-day period, and when is recertification due?”
- Confirm homebound and skilled-need language matches what your practitioner documented.
- Keep a visit calendar; missed therapy weeks can affect goals and discharge timing.
- Separate home health billing from hospital deductible and SNF coinsurance math.
- If on Advantage, use that plan’s prior-auth and network HHA list.
- Save MSNs until periods and visit counts match your calendar.
Checklist
- Confirm Original Medicare (A + B) vs Advantage before applying PDGM/$0 coinsurance assumptions.
- Verify certification and any required face-to-face / encounter documentation.
- Track 30-day periods and recertification dates with the agency.
- Budget for non-covered extras (some supplies, private-duty hours) even when skilled visits are $0 coinsurance.
- Do not mix home health episode math with the Part A hospital/SNF benefit-period clock.
- Call your state SHIP program before paying a collection demand you do not understand.
Hospice uses 90-day then 60-day election periods—not home health’s 30-day clock: Hospice election period basics.
Hospice inpatient respite (caregiver relief) is a different benefit from home health episodes: Medicare respite care basics.
Outpatient PT/OT/SLP Part B therapy thresholds (different from home health episodes): Medicare outpatient therapy threshold basics.
Educational only. Not insurance, tax, legal, or medical advice. Not a plan recommendation. Home health eligibility, PDGM period rules, certification requirements, Medigap letter benefits, and Advantage designs change; confirm with Medicare.gov, your state SHIP program, the home health agency, and insurer outlines of coverage.