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G47.19 ICD-10-CM Code: Other hypersomnia

Billing Status: YES. This is a valid, specific, and billable ICD-10-CM reference.

Coding at a Glance

Tabular directives
10 Excludes2

Inpatient Payment Groups (MS-DRG)

Potential MS-DRG participation — not a DRG assignment.

MS-DRGs this diagnosis helps define, as principal or secondary, per the CMS ICD-10-CM/PCS MS-DRG Definitions Manual v43, Appendix B.

  • MS-DRG 887 — OTHER MENTAL DISORDER DIAGNOSES (MDC 19)

A diagnosis appearing in a group's logic does not by itself determine the DRG assigned to a stay; the grouper uses the full claim.

Coding instructions

Official Tabular Instructional Notes: the inclusion, exclusion and sequencing notes published for G47.19 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 G47.19 itself; “inherited from” names the category or block whose note applies here.

Excludes2 — Not Included Here

Conditions not covered by this code, but which may be reported alongside it when both are present.

Coder workflow for G47.19

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

Before you code G47.19

  1. “Other” (NEC) means the condition is specified in the record but no dedicated code captures it. Confirm the documented form is not one a sibling code names before settling on G47.19; if the record states no specifics at all, the unspecified sibling applies instead. “Other” codes are for documented conditions the classification gives no specific code; “unspecified” codes are for records lacking the detail (Guidelines I.A.9.a, I.A.9.b).

    ReviewG47.11, G47.12, G47.13, G47.14

    See the relationships section · Guide: Other vs unspecified (NEC vs NOS) →

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).
Any detail beyond this code’s title
What the record states that a more specific sibling code would capture — or its absence, which itself supports the unspecified code.

Official instructions as workflow

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.

Code Overview

Other hypersomnia is a billable ICD-10-CM diagnosis code (G47.19).

MedCoder summary Summary composed by MedCoder from this code's official ICD-10-CM record. The tabular instructional notes themselves appear verbatim below.

Indexed Clinical Terms (1)

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.

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 G47.19 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 1 Excludes2 note: F51 — Sleep disorders not due to a substance or known physiological condition (via G47.-).

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).

F51.9 — 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, G47.13 — Recurrent hypersomnia, G47.14 — Hypersomnia due to medical condition, 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, G47.29 — Other circadian rhythm sleep disorder, G47.30 — Sleep apnea, unspecified, +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 G47.19 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 G47.19 with this related code in Claim Check

Hierarchy

Referenced by Excludes2 notes

Clinical classification (CCSR)

MS-DRG Grouper

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), specified NEC[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2026

Nearest codes (40)

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

Cite this page

Reference this page in a research guide, syllabus or article. The release is included because code content changes each year.

MedCoder.ai. "G47.19 — Other hypersomnia." ICD-10-CM FY2026. https://medcoder.ai/icd10/code/g47.19-other-hypersomnia

Change history

  • FY2016 — October 1, 2015
    In the code set at ICD-10-CM adoption
    Other hypersomnia

No changes since FY2016 — additions, deletions, description changes and billable-status changes are tracked through FY2027 (effective October 1, 2026), and none are recorded for this code. Note changes are tracked from FY2027 only.

Nearest Codes in This Family

Official ICD-10-CM classifications closest to G47.19 in its code family, with their registry titles.

View all codes in the G47 family