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ICD-10/G47.00

G47.00 ICD-10-CM Code: Insomnia, unspecified

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 (FY2026), 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.

Code Set: Valid FY2026 and FY2027. FY2026 took effect October 1, 2025.

Official Registry Overview & Definition

Insomnia, unspecified is a billable ICD-10-CM diagnosis code (G47.00).

Official Tabular Instructional Notes

Sequencing, inclusion, and exclusion notes published for G47.00 in the official ICD-10-CM tabular list.

Inclusion Terms

Alternative terms the tabular list files under this code.

  • Insomnia NOS

Excludes2 — Not Included Here

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

  • alcohol related insomnia (F10.182, F10.282, F10.982)
  • drug-related insomnia (F11.182, F11.282, F11.982, F13.182, F13.282, F13.982, F14.182, F14.282, F14.982, F15.182, F15.282, F15.982, F19.182, F19.282, F19.982)
  • idiopathic insomnia (F51.01)
  • insomnia due to a mental disorder (F51.05)
  • insomnia not due to a substance or known physiological condition (F51.0-)
  • nonorganic insomnia (F51.0-)
  • primary insomnia (F51.01)
  • sleep apnea (G47.3-)
  • nightmares (F51.5)
  • nonorganic sleep disorders (F51.-)
  • sleep terrors (F51.4)
  • sleepwalking (F51.3)

Nearest Codes in This Family

Official ICD-10-CM classifications closest to G47.00 in its code family, with their registry titles.

  • G47 — Sleep disorders
  • G47.0 — Insomnia
  • G47.01 — Insomnia due to medical condition
  • 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
  • G47.13 — Recurrent hypersomnia
  • G47.14 — Hypersomnia due to medical condition

View all codes in the G47 family

Indexed Clinical Terms (1)

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

  • Insomnia (organic)