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ICD-10/G47.51

G47.51 ICD-10-CM Code: Confusional arousals

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

Inpatient Payment Groups (MS-DRG)

MS-DRGs this diagnosis helps define, as principal or secondary, per the CMS ICD-10-CM/PCS MS-DRG Definitions Manual v43.0, Appendix B.

  • MS-DRG 011 — TRACHEOSTOMY FOR FACE, MOUTH AND NECK DIAGNOSES OR LARYNGECTOMY WITH MCC (MDC PRE)
  • MS-DRG 012 — TRACHEOSTOMY FOR FACE, MOUTH AND NECK DIAGNOSES OR LARYNGECTOMY WITH CC (MDC PRE)
  • MS-DRG 013 — TRACHEOSTOMY FOR FACE, MOUTH AND NECK DIAGNOSES OR LARYNGECTOMY WITHOUT CC/MCC (MDC PRE)
  • MS-DRG 091 — OTHER DISORDERS OF NERVOUS SYSTEM WITH MCC (MDC 01)
  • MS-DRG 092 — OTHER DISORDERS OF NERVOUS SYSTEM WITH CC (MDC 01)
  • MS-DRG 093 — OTHER DISORDERS OF NERVOUS SYSTEM WITHOUT CC/MCC (MDC 01)

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.

Official Registry Overview & Definition

Confusional arousals is a billable ICD-10-CM diagnosis code (G47.51).

Official Tabular Instructional Notes

Sequencing, inclusion, and exclusion notes published for G47.51 in the official ICD-10-CM tabular list.

Excludes1 — Not Coded Here

Conditions generally not reported together with this code (Excludes1) -- an error unless the two conditions are documented as unrelated to each other (ICD-10-CM Official Guidelines, Section I.A.12.a).

Excludes2 — Not Included Here

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

Change history

No changes recorded for this code — unchanged since the FY2016 baseline of the change ledger.

Verify Before Coding

  • Billable — reportable as written.

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

Contextual Map

Every relationship of G47.51 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.

Hierarchy

  • G47.5 — Parasomnia [Hierarchy]

Referenced by Excludes2 notes

  • F51 — Sleep disorders not due to a substance or known physiological condition [Excludes2](via G47.-): “organic sleep disorders (G47.-)”

Clinical classification (CCSR)

  • NVS016 — Sleep wake disorders [CCSR]

Potential MS-DRG

  • DRG 011 — TRACHEOSTOMY FOR FACE, MOUTH AND NECK DIAGNOSES OR LARYNGECTOMY WITH MCC [MS-DRG]: “TRACHEOSTOMY FOR FACE, MOUTH AND NECK DIAGNOSES OR LARYNGECTOMY WITH MCC (MDC PRE)”
  • DRG 012 — TRACHEOSTOMY FOR FACE, MOUTH AND NECK DIAGNOSES OR LARYNGECTOMY WITH CC [MS-DRG]: “TRACHEOSTOMY FOR FACE, MOUTH AND NECK DIAGNOSES OR LARYNGECTOMY WITH CC (MDC PRE)”
  • DRG 013 — TRACHEOSTOMY FOR FACE, MOUTH AND NECK DIAGNOSES OR LARYNGECTOMY WITHOUT CC/MCC [MS-DRG]: “TRACHEOSTOMY FOR FACE, MOUTH AND NECK DIAGNOSES OR LARYNGECTOMY WITHOUT CC/MCC (MDC PRE)”
  • DRG 091 — OTHER DISORDERS OF NERVOUS SYSTEM WITH MCC [MS-DRG]: “OTHER DISORDERS OF NERVOUS SYSTEM WITH MCC (MDC 01)”
  • DRG 092 — OTHER DISORDERS OF NERVOUS SYSTEM WITH CC [MS-DRG]: “OTHER DISORDERS OF NERVOUS SYSTEM WITH CC (MDC 01)”
  • DRG 093 — OTHER DISORDERS OF NERVOUS SYSTEM WITHOUT CC/MCC [MS-DRG]: “OTHER DISORDERS OF NERVOUS SYSTEM WITHOUT CC/MCC (MDC 01)”

Index entries

  • Arousals, confusional[Index term]
  • Confusional arousals[Index term]

Nearest codes (40)

  • G47 — Sleep disorders [Sibling]
  • G47.2 — Circadian rhythm sleep disorders [Sibling]
  • G47.20 — Circadian rhythm sleep disorder, unspecified type [Sibling]
  • G47.21 — Circadian rhythm sleep disorder, delayed sleep phase type [Sibling]
  • G47.22 — Circadian rhythm sleep disorder, advanced sleep phase type [Sibling]
  • G47.23 — Circadian rhythm sleep disorder, irregular sleep wake type [Sibling]
  • G47.24 — Circadian rhythm sleep disorder, free running type [Sibling]
  • G47.25 — Circadian rhythm sleep disorder, jet lag type [Sibling]
  • and 32 more

Referenced by Other Codes

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.

Potential MS-DRG Relationships (FY2026)

Not on the CMS CC/MCC list — as a secondary diagnosis this code does not change MS-DRG severity.

Named in the grouper logic of 6 MS-DRGs: DRG 011 (MDC PRE), DRG 012 (MDC PRE), DRG 013 (MDC PRE), DRG 091 (MDC 01), DRG 092 (MDC 01), DRG 093 (MDC 01).

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

Official ICD-10-CM tabular notes on other codes that name G47.51 or its code family.

1 Excludes2 notes: F51 (via G47.-).

Nearest Codes in This Family

Official ICD-10-CM classifications closest to G47.51 in its code family, with their registry titles.

  • G47.42 — Narcolepsy in conditions classified elsewhere
  • G47.421 — Narcolepsy in conditions classified elsewhere with cataplexy
  • G47.429 — Narcolepsy in conditions classified elsewhere without cataplexy
  • G47.5 — Parasomnia
  • G47.50 — Parasomnia, unspecified
  • G47.52 — REM sleep behavior disorder
  • G47.53 — Recurrent isolated sleep paralysis
  • G47.54 — Parasomnia in conditions classified elsewhere
  • G47.59 — Other parasomnia
  • G47.6 — Sleep related movement disorders

View all codes in the G47 family

Indexed Clinical Terms (2)

Clinical term phrases from the official ICD-10-CM Index to Diseases and Injuries that map to this code.

  • Arousals, confusional
  • Confusional arousals