Alphabetic Index FY2027

G81.9

Hemiplegia, unspecified

FY2027Chapter 6: Diseases of the nervous system/G80–G83 Cerebral palsy and other paralytic syndromes

Non-billable headerNot valid on its own. Use one of the more specific codes under it.

G81.9 is a non-billable ICD-10-CM code header for hemiplegia, unspecified. Report a more specific code from it instead. It is part of the FY2027 code set, effective October 1, 2026. The more specific codes under it are G81.90 Hemiplegia, unspecified affecting unspecified side; G81.91 Hemiplegia, unspecified affecting right dominant side; G81.92 Hemiplegia, unspecified affecting left dominant side; G81.93 Hemiplegia, unspecified affecting right nondominant side and 1 more. Its coding notes include 2 Excludes1 entries and 8 Excludes2 entries.

Guidelines tip

From the FY2027 Official Guidelines. ICD10Ref adds no rules of its own.

These codes identify whether the dominant or nondominant side is affected. The Guidelines give defaults when the side is documented but dominance is not.

Guidelines I.C.9.d.1; I.C.6.aHemiplegia and monoplegia: dominant and nondominant sideRead the official text

Excludes1

Not coded here. The listed conditions generally should not be reported together.

Inherited from G81 Hemiplegia and hemiparesis

Excludes2

Not included here. Both codes may be reported if the patient has both conditions.

Also from chapter/block level (8 notes)
Inherited from Chapter 6 Diseases of the nervous system
  • certain conditions originating in the perinatal period (P04-P96)
  • certain infectious and parasitic diseases (A00-B99)
  • complications of pregnancy, childbirth and the puerperium (O00-O9A)
  • congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
  • endocrine, nutritional and metabolic diseases (E00-E88)
  • injury, poisoning and certain other consequences of external causes (S00-T88)
  • neoplasms (C00-D49)
  • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)

Notes

Inherited from G81 Hemiplegia and hemiparesis
  • This category is to be used only when hemiplegia (complete)(incomplete) is reported without further specification, or is stated to be old or longstanding but of unspecified cause. The category is also for use in multiple coding to identify these types of hemiplegia resulting from any cause.

Alphabetic Index terms

Terms the official Alphabetic Index lists for this code. 1 entry

More specific codes under G81.9 5