Alphabetic Index FY2027

G83.1

Monoplegia of lower limb

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.

G83.1 is a non-billable ICD-10-CM code header for monoplegia of lower limb. 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 G83.10 Monoplegia of lower limb affecting unspecified side, G83.11 Monoplegia of lower limb affecting right dominant side, G83.12 Monoplegia of lower limb affecting left dominant side, G83.13 Monoplegia of lower limb affecting right nondominant side and 1 more. Its coding notes include 1 Excludes1 entry 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.

This code

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)

Includes

Further defines or gives examples of the content of the category.

Inherited from G83 Other paralytic syndromes
  • paralysis (complete) (incomplete), except as in G80-G82

Inclusion terms

Conditions classified to this code.

This code
  • Paralysis of lower limb

Notes

Inherited from G83 Other paralytic syndromes
  • This category is to be used only when the listed conditions are reported without further specification, or are stated to be old or longstanding but of unspecified cause. The category is also for use in multiple coding to identify these conditions resulting from any cause.

Alphabetic Index terms

Terms the official Alphabetic Index lists for this code. 2 entries

More specific codes under G83.1 5