TL;DR
Chapter 8 of the Medicare Benefit Policy Manual sets the conditions for Part A coverage of extended care in a skilled nursing facility. It explains the qualifying hospital stay of at least 3 consecutive inpatient days, the requirement to enter the SNF within 30 days of discharge, what makes care skilled and daily, the physician certification and recertification, and which services the SNF benefit covers.
Chapter 8 at a glance
- Current revision
- Rev. 12283
- Issued October 5, 2023
- Effective
- January 8, 2024
- Implemented January 8, 2024
- Sections
- 67
- 7 top-level sections
- Transmittals in history
- 21
- Listed at the end of the chapter
- Monthly searches
- 210
- Google Ads, US, October 2026
What chapter 8 governs for billing
Section 20 holds the two entry requirements. The beneficiary must have been a hospital inpatient for a medically necessary stay of at least 3 consecutive calendar days, not counting the day of discharge (20.1), and must generally be admitted to the SNF within 30 days after the hospital discharge (20.2). The medical appropriateness exception allows a later admission when SNF care could not begin within 30 days for medical reasons and the need for it was predictable at discharge (20.2.2). Payment bans on new admissions and their effect on beneficiaries are covered in 20.3.
Section 30 defines the level of care. The beneficiary must need skilled nursing or skilled rehabilitation services, or both, on a daily basis, which for rehabilitation alone means at least 5 days a week (30.6), and as a practical matter those services must be available only on an inpatient basis in a SNF (30.7). Sections 30.2 to 30.4 explain what makes a service skilled, including management and evaluation of a care plan, observation and assessment, and teaching and training, and section 30.5 lists nonskilled supportive care that does not qualify on its own.
Section 40 requires a physician or allowed practitioner to certify, and periodically recertify, that the patient needs daily skilled care. Section 50 lists the covered extended care services: nursing, bed and board in semi-private rooms, therapy, medical social services, drugs, supplies and equipment, and other services under arrangement. The number of covered days, up to 100 per benefit period with coinsurance after the 20th day, is set out in chapter 3 of the same manual, which section 60 points to, and section 70 covers Part B services for SNF patients.
Sections billing teams use most
Section numbers and headings are CMS's; the notes are ours. Each section number opens the official chapter 8 PDF at the page where that section starts.
| Section | CMS heading | Why it matters |
|---|---|---|
| 20.1 | Three-Day Prior Hospitalization | The qualifying hospital stay of at least 3 consecutive inpatient days. |
| 20.2 | Thirty-Day Transfer | The 30-day transfer requirement and how the day count works. |
| 20.2.2 | Medical Appropriateness Exception | The medical appropriateness exception that allows a later SNF admission. |
| 30.2.1 | Skilled Services Defined | Skilled services defined. |
| 30.6 | Daily Skilled Services Defined | Daily skilled services: essentially 7 days a week, or at least 5 days a week for therapy alone. |
| 40 | Physician Certification and Recertification for Extended Care Services | Physician certification and recertification for extended care services. |
How chapter 8 shows up on claims and denials
A SNF stay without a qualifying hospital stay, or one that starts too late after discharge, is not covered, and the SNF bills it as a no-payment claim under the rules in the Claims Processing Manual chapter 6. Days when the beneficiary did not need or receive daily skilled care are denied with reason code 50, and review findings that the care was supportive rather than skilled lead to the same result.
Benefit limits show up as well. Once the 100 days in a benefit period are used, further days are denied as benefits exhausted, which posts with reason code 119, and observation days in the hospital do not count toward the 3-day inpatient requirement. Because the stay rules depend on the hospital's inpatient order, SNFs confirm the inpatient dates before admission.
Codes you are likely to see on the remittance when a claim runs into this chapter's rules. The code pages explain each code's meaning, root causes and the usual fix.
| Code | Type | When it appears |
|---|---|---|
| 50 | Claim adjustment reason code | Daily skilled care not reasonable and necessary for the days billed. |
| 119 | Claim adjustment reason code | Benefit maximum reached, for example the 100 SNF days in a benefit period. |
| 272 | Claim adjustment reason code | Coverage guidelines not met, such as the qualifying stay or transfer rule. |
Current revision and recent transmittals
The chapter PDF posted on cms.gov is current through Rev. 12283, issued October 5, 2023, effective January 8, 2024, implemented January 8, 2024 (change request 13271). That revision changed section 10.2 (Medicare SNF Coverage Guidelines Under PPS). Its subject line reads: “Internet Only Manual Updates to Pub. 100-02 and 100-04 to Implement Consolidated Appropriations Act 2023 Changes for Skilled Nursing Facility (SNF)”.
The newest rows of the transmittal history printed at the end of the chapter (21 revisions in all). Rows whose subject could not be read reliably from the PDF table are left out; the PDF has the complete list.
| Revision | Issued | Subject | CR |
|---|---|---|---|
| R12283BP | October 5, 2023 | Internet Only Manual Updates to Pub. 100-02 and 100-04 to Implement Consolidated Appropriations Act 2023 Changes for Skilled Nursing Facility (SNF) | 13271 |
| R10880BP | August 6, 2021 | Internet Only Manual Updates to Pub. 100-01, 100-02, and 100-04 to Implement Consolidated Appropriations Act Changes and Correct Errors and Omissions (SNF) | 12009 |
| R261BP | October 4, 2019 | Manual Updates for CR11152 Implementation of the Skilled Nursing Facility (SNF) Patient Driven Payment Model (PDPM) | 11454 |
| R249BP | November 2, 2018 | Internet Only Manual Updates to Pub. 100-01, 100-02 and 100-04 to Correct Errors and Omissions (SNF) (2018 Q4) | 11004 |
| R242BP | March 16, 2018 | Internet Only Manual Updates to Pub. 100-01, 100-02 and 100-04 to Correct Errors and Omissions (SNF) (2018) | 10512 |
| R228BP | October 13, 2016 | Internet Only Manual Updates to Pub. 100-01, 100-02 and 100-04 to Correct Errors and Omissions (SNF) | 9748 |
Sections ordered by the date in the revision note printed under each heading.
| Section | Heading | Revision |
|---|---|---|
| 10.2 | Medicare SNF Coverage Guidelines Under PPS | Rev. 12283, October 5, 2023; effective January 8, 2024 |
| 20.1 | Three-Day Prior Hospitalization | Rev. 10880, August 6, 2021; effective November 8, 2021 |
| 40 | Physician Certification and Recertification for Extended Care Services | Rev. 10880, August 6, 2021; effective November 8, 2021 |
| 10.1 | Medicare SNF PPS Overview | Rev. 261, October 4, 2019; effective November 5, 2019 |
| 20.1.1 | Three-Day Prior Hospitalization - Foreign Hospital | Rev. 261, October 4, 2019; effective November 5, 2019 |
| 30.1 | Administrative Level of Care Presumption | Rev. 261, October 4, 2019; effective November 5, 2019 |
| 30.7 | Services Provided on an Inpatient Basis as a "Practical Matter" | Rev. 261, October 4, 2019; effective November 5, 2019 |
| 30.7.1 | The Availability of Alternative Facilities or Services | Rev. 261, October 4, 2019; effective November 5, 2019 |
Section index
Every section in the chapter's table of contents, grouped under its top-level heading, with the PDF page where it starts. Open a heading to see its subsections.
10 Requirements - General · p. 4 · 3 subsections
- Open section 10 in the PDF
- 10.1 Medicare SNF PPS Overview · p. 5
- 10.2 Medicare SNF Coverage Guidelines Under PPS · p. 5
- 10.3 Hospital Providers of Extended Care Services · p. 7
20 Prior Hospitalization and Transfer Requirements · p. 8 · 19 subsections
- Open section 20 in the PDF
- 20.1 Three-Day Prior Hospitalization · p. 8
- 20.1.1 Three-Day Prior Hospitalization - Foreign Hospital · p. 10
- 20.2 Thirty-Day Transfer · p. 10
- 20.2.1 General · p. 11
- 20.2.2 Medical Appropriateness Exception · p. 11
- 20.2.2.1 Medical Needs Are Predictable · p. 12
- 20.2.2.2 Medical Needs Are Not Predictable · p. 12
- 20.2.2.3 SNF Stay Prior to Beginning of Deferred Covered Treatment · p. 13
- 20.2.2.4 Effect of Delay in Initiation of Deferred Care · p. 14
- 20.2.2.5 Effect on Spell of Illness · p. 15
- 20.2.3 Readmission to a SNF · p. 15
- 20.3 Payment Bans · p. 15
- 20.3.1 Payment Bans on New Admissions · p. 15
- 20.3.1.1 Beneficiary Notification · p. 17
- 20.3.1.2 Readmissions and Transfers · p. 17
- 20.3.1.3 Sanctions Lifted: Procedures for Beneficiaries Admitted During the Sanction Period · p. 17
- 20.3.1.4 Payment Under Part B During a Payment Ban on New Admissions · p. 18
- 20.3.1.5 Impact of Consolidated Billing Requirements · p. 18
- 20.3.1.6 Impact on Spell of Illness · p. 18
30 Skilled Nursing Facility Level of Care - General · p. 18 · 23 subsections
- Open section 30 in the PDF
- 30.1 Administrative Level of Care Presumption · p. 19
- 30.2 Skilled Nursing and Skilled Rehabilitation Services · p. 23
- 30.2.1 Skilled Services Defined · p. 23
- 30.2.2 Principles for Determining Whether a Service is Skilled · p. 23
- 30.2.2.1 Documentation to Support Skilled Care Determinations · p. 25
- 30.2.3 Specific Examples of Some Skilled Nursing or Skilled Rehabilitation Services · p. 27
- 30.2.3.1 Management and Evaluation of a Patient Care Plan · p. 27
- 30.2.3.2 Observation and Assessment of Patient's Condition · p. 29
- 30.2.3.3 Teaching and Training Activities · p. 31
- 30.2.4 Questionable Situations · p. 32
- 30.3 Direct Skilled Nursing Services to Patients · p. 32
- 30.4 Direct Skilled Therapy Services to Patients · p. 34
- 30.4.1 Skilled Physical Therapy · p. 34
- 30.4.1.1 General · p. 34
- 30.4.1.2 Application of Guidelines · p. 36
- 30.4.2 Speech-Language Pathology · p. 38
- 30.4.3 Occupational Therapy
- 30.5 Nonskilled Supportive or Personal Care Services · p. 39
- 30.6 Daily Skilled Services Defined · p. 40
- 30.7 Services Provided on an Inpatient Basis as a "Practical Matter" · p. 41
- 30.7.1 The Availability of Alternative Facilities or Services · p. 42
- 30.7.2 Whether Available Alternatives Are More Economical in the Individual Case · p. 42
- 30.7.3 Whether the Patient's Physical Condition Would Permit Utilization of an Available, More Economical Care Alternative · p. 43
40 Physician Certification and Recertification for Extended Care Services · p. 44 · 1 subsections
- Open section 40 in the PDF
- 40.1 Who May Sign the Certification or Recertification for Extended Care Services · p. 45
50 Covered Extended Care Services · p. 46 · 10 subsections
- Open section 50 in the PDF
- 50.1 Nursing Care Provided by or Under the Supervision of a Registered Professional Nurse · p. 47
- 50.2 Bed and Board in Semi-Private Accommodations Furnished in Connection With Nursing Care · p. 47
- 50.3 Physical, Therapy, Speech-Language Pathology and Occupational Therapy Furnished by the Skilled Nursing Facility or by Others Under Arrangements With the Facility and Under Its Supervision · p. 47
- 50.4 Medical Social Services to Meet the Patient's Medically Related Social Needs · p. 48
- 50.5 Drugs and Biologicals · p. 48
- 50.6 Supplies, Appliances, and Equipment · p. 49
- 50.7 Medical Service of an Intern or Resident-in-Training · p. 50
- 50.8 Other Services · p. 50
- 50.8.1 General · p. 50
- 50.8.2 Respiratory Therapy · p. 51
60 Covered Extended Care Days · p. 51
70 Medical and Other Health Services Furnished to SNF Patients · 4 subsections
- Open section 70 in the PDF
- 70.1 Diagnostic Services and Radiological Therapy · p. 53
- 70.2 Ambulance Service · p. 53
- 70.3 Inpatient Physical Therapy, Occupational Therapy, and Speech-Language Pathology Services
- 70.4 Services Furnished Under Arrangements With Providers · p. 54
Using this chapter in a denial or appeal
Start with the remittance. The claim adjustment reason code says what happened to the line, the remark code narrows it, and the group code says who is liable. Match that to the section of the chapter that sets the rule, then read the section in the official PDF rather than a summary: the wording that matters, such as a time limit, a modifier requirement or a documentation element, is usually a single sentence. Check the revision note under the section heading, because a rule that changed after the date of service may not apply to the claim, and an effective date earlier than the issue date can make a new rule reach back.
When the chapter supports the claim, cite it precisely in the redetermination request: the publication number, chapter, section and revision. When it does not, the fix is usually a corrected claim or better documentation rather than an appeal, and a coding or format rejection is corrected and resubmitted because it carries no appeal rights. Manual instructions bind the Medicare Administrative Contractor, so they settle most first-level disputes; at the hearing level, administrative law judges give them substantial deference without being bound by them. If the issue turns on whether a service is covered at all, read the matching Benefit Policy Manual chapter and any national coverage determination or local coverage determination as well, because coverage and billing rules are written in different places.
How QuickIntell works with Benefit Policy Manual chapter 8
QuickAuth coordinates requirement checks, documentation, submission and status tracking with human review, so the coverage conditions in this chapter are looked at before the service. QuickRCM handles claim readiness and the coverage denials that follow.
Frequently asked questions: chapter 8
What is the Medicare 3-day rule for SNF coverage?
Chapter 8 section 20.1 of the Medicare Benefit Policy Manual requires a medically necessary hospital inpatient stay of at least 3 consecutive calendar days, not counting the discharge day, before Part A covers a SNF stay.
How soon after discharge must the SNF admission happen?
Generally within 30 days of the hospital discharge, under section 20.2. The medical appropriateness exception in 20.2.2 allows a later admission when the delay was medically predictable and appropriate.
How many SNF days does Medicare cover?
Up to 100 days in a benefit period, with daily coinsurance after day 20. Chapter 8 section 60 points to chapter 3 of the same manual, which sets the day limits.
Sources
Every figure on this page is taken from the CMS publications below, as released by the Centers for Medicare & Medicaid Services. Projection built 2026-10-10. Verify against the primary file before billing or contracting decisions. The reference methodology explains how each figure is computed from these files.
- Medicare Benefit Policy Manual, Chapter 8: Coverage of Extended Care (SNF) Services Under Hospital InsuranceVersion Rev. 12283, issued 2023-10-05 · effective 2024-01-08 · file bp102c08pdf.pdfSHA-256 9e6bd59dfad61dcc…
- Medicare Benefit Policy Manual (Pub. 100-02)Version 17 chapter PDFs; newest revision Rev. 13889 (chapter 15), issued 2026-07-30 · effective 2026-09-27 · file 100-02-benefit-policy-manual/*.pdf (17 chapters; SHA-256 of their sha256sum listing)SHA-256 be35772e4f9f80b4…
Disclaimer
This guide summarizes a CMS manual chapter in our own words for billing teams; section headings and transmittal subjects are quoted from the chapter PDF. The chapter itself is the authority, and it changes by transmittal. Not legal, clinical or billing advice.
Found a figure that does not match the CMS file? Report a data correction with the CMS file and the value you expected; the request reaches the editorial team through the contact form.