G47.13 ICD-10-CM Code: Recurrent hypersomnia

Coding instructions

Official Tabular Instructional Notes: the inclusion, exclusion and sequencing notes published for G47.13 in the official ICD-10-CM tabular list, quoted as published.

Source: CMS/CDC — ICD-10-CM Tabular ListRelease: FY2026Effective: October 1, 2025

Notes without a marker are published on G47.13 itself; “inherited from” names the category or block whose note applies here.

Coder workflow for G47.13

MedCoder structured workflow — derived from this code’s own official record

Documentation check

The provider’s diagnostic statement

Codes are assigned from the provider’s documented diagnosis, not from clinical criteria, test values or a medication list (Guidelines I.A.19).

The associated condition or complication

Whether the associated condition the title names is documented; the “with” convention presumes some links, and a provider statement that the conditions are unrelated defeats it (Guidelines I.A.15).

Official instructions as workflow

• Excludes2 — not part of G47.13(10 notes)

  Coding workflow: The conditions named in this note are not included in G47.13. When the record documents both, both may be reported; the note is a boundary, not a prohibition.

  CompareF10.182, F10.282, F10.982, F11.182, F11.282, F11.982

  See the official tabular notes · Guidelines I.A.12.b

Every row is derived from this code’s own record — its title, tabular notes, 7th-character family and same-category siblings — with fixed MedCoder wording; nothing is inferred about a patient. The official notes and guideline text are in the sections each row links to, and they control.

Indexed Clinical Terms (4)

Official source data — entries quoted as published, in the Index’s own lookup phrasing

Clinical term phrases from the official ICD-10-CM Index to Diseases and Injuries that map to this code. These are alphabetic-index entries shown as the Index writes them — lookup phrasing, not necessarily the wording of a final diagnosis.

• Hypersomnia (organic), menstrual related
• Hypersomnia (organic), recurrent
• Klein-Levin syndrome (e)
• Syndrome, Klein-Levine (e)

Don’t confuse G47.13 with…

MedCoder analysis — pairs from this code’s official notes, distinctions written by MedCoder

The codes most likely to be picked instead of G47.13 — named in its own official notes, or sharing its laterality or encounter family — with what separates them and which documentation moves the case. Each links to the full comparison.

• G47.10— Specificity relationship (Review)

  Overlapping diagnoses in the same category.

  Overlapping codes in the same category — the documentation decides which is the more specific fit.

  What moves you there: A record that documents no more than “Hypersomnia, unspecified” takes G47.10; specificity in the record moves it back here.

  Full comparison: G47.13 vs G47.10 →

• F10.182— Excludes2 relationship (Informational)

  Distinct conditions — both may be reported.

  A distinct condition — both may be reported when both are documented.

  What moves you there: Documentation of alcohol-related hypersomnia adds F10.182; it is not part of this code and both may be reported when both are documented.

  Full comparison: G47.13 vs F10.182 →

• F10.282— Excludes2 relationship (Informational)

  Distinct conditions — both may be reported.

  A distinct condition — both may be reported when both are documented.

  What moves you there: Documentation of alcohol-related hypersomnia adds F10.282; it is not part of this code and both may be reported when both are documented.

  Full comparison: G47.13 vs F10.282 →

• F10.982— Excludes2 relationship (Informational)

  Distinct conditions — both may be reported.

  A distinct condition — both may be reported when both are documented.

  What moves you there: Documentation of alcohol-related hypersomnia adds F10.982; it is not part of this code and both may be reported when both are documented.

  Full comparison: G47.13 vs F10.982 →

• F11.182— Excludes2 relationship (Informational)

  Distinct conditions — both may be reported.

  A distinct condition — both may be reported when both are documented.

  What moves you there: Documentation of drug-related hypersomnia adds F11.182; it is not part of this code and both may be reported when both are documented.

  Full comparison: G47.13 vs F11.182 →

• F11.282— Excludes2 relationship (Informational)

  Distinct conditions — both may be reported.

  A distinct condition — both may be reported when both are documented.

  What moves you there: Documentation of drug-related hypersomnia adds F11.282; it is not part of this code and both may be reported when both are documented.

  Full comparison: G47.13 vs F11.282 →

Relationships are read from this code's own official notes, its laterality siblings and its encounter family; the wording of each distinction is MedCoder editorial, and the documentation named in each “what moves you there” line is the official note phrase or sibling title itself. Source: CMS ICD-10-CM tabular instructional notes; ICD-10-CM Official Guidelines, Section I.A.12.a.

Verify Before Coding

• No Medicare Code Editor or MS-DRG Definitions Manual restrictions apply to this code.

From the code registry, the Medicare Code Editor, and the MS-DRG Definitions Manual. Check it against a full claim in Claim Check.

Relationships & Classification

MedCoder structured relationships — computed from published CMS and AHRQ datasets

Other codes that name G47.13 or its code family, from the CMS ICD-10-CM tabular instructional notes. Tabular-note edges are stored at the code family level that carries each note.

Referenced by 2 Excludes2 notes: F51 — Sleep disorders not due to a substance or known physiological condition (via G47.-), F98 — Other behavioral and emotional disorders with onset usually occurring in childhood and adolescence.

These codes’ tabular lists name this diagnosis as distinct — both may be reported when both are documented.

MS-DRG Grouper Relationships (FY2026)

Potential MS-DRG participation — not a DRG assignment.

FY2026 MS-DRG: not on the CMS CC/MCC list — as a secondary diagnosis this code does not change MS-DRG severity for that release.

Named in the grouper logic of 1 MS-DRG: DRG 887 (MDC 19).

From the CMS MS-DRG Definitions Manual (Appendices B and C). Actual DRG assignment depends on the complete claim.

Clinical classification (AHRQ CCSR):NVS016 — Sleep wake disorders (default).

Clinical Classifications Software Refined (CCSR) for ICD-10-CM Diagnoses. Healthcare Cost and Utilization Project (HCUP), Agency for Healthcare Research and Quality.

Related Codes

Same clinical category (CCSR)

AHRQ's Clinical Classifications Software groups these diagnoses under the same clinical category (Sleep wake disorders).

F51.5 — Nightmare disorder, F51.8 — Other sleep disorders not due to a substance or known physiological condition, F51.9 — Sleep disorder not due to a substance or known physiological condition, unspecified, G25.81 — Restless legs syndrome, G47.00 — Insomnia, unspecified, G47.01 — Insomnia due to medical condition, G47.09 — Other insomnia, G47.10 — Hypersomnia, unspecified, G47.11 — Idiopathic hypersomnia with long sleep time, G47.12 — Idiopathic hypersomnia without long sleep time, G47.14 — Hypersomnia due to medical condition, G47.19 — Other hypersomnia, G47.20 — Circadian rhythm sleep disorder, unspecified type, G47.21 — Circadian rhythm sleep disorder, delayed sleep phase type, G47.22 — Circadian rhythm sleep disorder, advanced sleep phase type, G47.23 — Circadian rhythm sleep disorder, irregular sleep wake type, G47.24 — Circadian rhythm sleep disorder, free running type, G47.25 — Circadian rhythm sleep disorder, jet lag type, G47.26 — Circadian rhythm sleep disorder, shift work type, G47.27 — Circadian rhythm sleep disorder in conditions classified elsewhere, +42 more

Same Index main term, other category

The ICD-10-CM Index to Diseases and Injuries files this code under the main term “Hypersomnia”; these codes share that main term but sit in a different category of the Tabular List.

F10.282 — Alcohol dependence with alcohol-induced sleep disorder (due to, alcohol, dependence), F10.982 — Alcohol use, unspecified with alcohol-induced sleep disorder (due to, alcohol, use), F11.182 — Opioid abuse with opioid-induced sleep disorder (due to, opioid, abuse), F11.282 — Opioid dependence with opioid-induced sleep disorder (due to, opioid, dependence), F11.982 — Opioid use, unspecified with opioid-induced sleep disorder (due to, opioid, use), F13.182 — Sedative, hypnotic or anxiolytic abuse with sedative, hypnotic or anxiolytic-induced sleep disorder (due to, sedative, hypnotic, or anxiolytic, abuse), F13.282 — Sedative, hypnotic or anxiolytic dependence with sedative, hypnotic or anxiolytic-induced sleep disorder (due to, sedative, hypnotic, or anxiolytic, dependence), F13.982 — Sedative, hypnotic or anxiolytic use, unspecified with sedative, hypnotic or anxiolytic-induced sleep disorder (due to, sedative, hypnotic, or anxiolytic, use), F14.182 — Cocaine abuse with cocaine-induced sleep disorder (due to, cocaine, abuse), F14.282 — Cocaine dependence with cocaine-induced sleep disorder (due to, cocaine, dependence), F14.982 — Cocaine use, unspecified with cocaine-induced sleep disorder (due to, cocaine, use), F15.182 — Other stimulant abuse with stimulant-induced sleep disorder (due to, caffeine, abuse), F15.282 — Other stimulant dependence with stimulant-induced sleep disorder (due to, caffeine, dependence), F15.982 — Other stimulant use, unspecified with stimulant-induced sleep disorder (due to, caffeine, use), F19.182 — Other psychoactive substance abuse with psychoactive substance-induced sleep disorder (due to, drug NEC, abuse), F19.282 — Other psychoactive substance dependence with psychoactive substance-induced sleep disorder (due to, drug NEC, dependence), F19.982 — Other psychoactive substance use, unspecified with psychoactive substance-induced sleep disorder (due to, drug NEC, use), F51.11 — Primary hypersomnia (primary), F51.13 — Hypersomnia due to other mental disorder (due to, mental disorder), F51.19 — Other hypersomnia not due to a substance or known physiological condition (nonorganic origin, specified NEC), +1 more

Contextual Map

Every relationship of G47.13 in one view: hierarchy, official tabular instructions in both directions, clinical classification, risk adjustment, MS-DRG participation, index terms and change history — each edge carrying the CMS source it derives from.

Run G47.13 with these 2 related codes in Claim Check

Hierarchy

• G00-G99 — Chapter 6: Diseases of the Nervous System (G00-G99) (G00-G99)[Hierarchy]— CMS ICD-10-CM tabular structure · icd10cm-fy2026

Referenced by Excludes2 notes

• F51 — Sleep disorders not due to a substance or known physiological condition[Excludes2](via G47.-): “organic sleep disorders (G47.-)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026
• F98 — Other behavioral and emotional disorders with onset usually occurring in childhood and adolescence[Excludes2]: “Kleine-Levin syndrome (G47.13)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026

Clinical classification (CCSR)

• NVS016 — Sleep wake disorders[CCSR]— AHRQ CCSR for ICD-10-CM Diagnoses (HCUP)

MS-DRG Grouper

• DRG 887 — OTHER MENTAL DISORDER DIAGNOSES[MS-DRG]: “OTHER MENTAL DISORDER DIAGNOSES (MDC 19)”— CMS MS-DRG Definitions Manual (Appendix B) · FY2026

MDC crossing

• MDC 19 — Mental Diseases and Disorders[MDC crossing]: “Mental Diseases and Disorders — the grouper's crossing between diagnoses and procedures: a principal diagnosis sets the MDC, and same-MDC procedures move the stay to its surgical DRGs.”— CMS MS-DRG Definitions Manual · FY2026

Index entries

• Hypersomnia (organic), menstrual related[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2026
• Hypersomnia (organic), recurrent[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2026
• Klein-Levin syndrome (e)[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2026
• Syndrome, Klein-Levine (e)[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2026

Nearest codes (40)

• G47 — Sleep disorders[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• G47.0 — Insomnia[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• G47.00 — Insomnia, unspecified[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• G47.01 — Insomnia due to medical condition[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• G47.09 — Other insomnia[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• G47.1 — Hypersomnia[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• G47.10 — Hypersomnia, unspecified[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• G47.11 — Idiopathic hypersomnia with long sleep time[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• and 32 more

Change history

• FY2016 — In the code set at ICD-10-CM adoption [Change history]— CMS release files (code change ledger) · icd10cm-fy2016

Sources for this page

Codes, titles, notes, index terms and mappings on this page are transcribed from the datasets below. Relationships MedCoder computed and text MedCoder wrote are labelled where they appear.

Code, title, tabular notes and index terms Official source data

CMS/CDC ICD-10-CM FY2026 tabular list, index and tables, effective October 1, 2025 Release, file and checksum · Publisher’s page

Claim edits Official source data

CMS Definitions of Medicare Code Edits — v43.1 (April 2026) Release, file and checksum · Publisher’s page

Inpatient payment groups Official source data

CMS MS-DRG Definitions Manual (incl. Appendix B diagnosis index, Appendix C CC/MCC list, Appendix E procedure index) and IPPS Final Rule tables — v43 Release, file and checksum · Publisher’s page

Change history and date-of-service validity Official source data

CMS ICD-10-CM release addenda, ingested release by release into the change ledger Release, file and checksum · Publisher’s page

Comparisons, relationships and the contextual map MedCoder structured relationship

Computed by MedCoder from the tabular notes and tables above; every derived relationship is marked as derived where it appears

Summary and FAQ answers MedCoder explanation

Written by MedCoder to explain the sources above: drafted with AI assistance, checked by a person against the release files, and labelled as MedCoder text where it appears. Not official text.

Labels on this page: Official source data · MedCoder structured relationship · MedCoder explanation. How to read the labels · All data sources and release dates

Nearest Codes in This Family

Official ICD-10-CM classifications closest to G47.13 in its code family, with their registry titles.

• G47.09 — Other insomnia
• G47.1 — Hypersomnia
• G47.10 — Hypersomnia, unspecified
• G47.11 — Idiopathic hypersomnia with long sleep time
• G47.12 — Idiopathic hypersomnia without long sleep time
• G47.14 — Hypersomnia due to medical condition
• G47.19 — Other hypersomnia
• G47.2 — Circadian rhythm sleep disorders
• G47.20 — Circadian rhythm sleep disorder, unspecified type
• G47.21 — Circadian rhythm sleep disorder, delayed sleep phase type

View all codes in the G47 family