G21.11

Neuroleptic induced parkinsonism

Billable / specific

G21.11 is a billable, specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes in FY2027.

Excludes1

Not coded here — never report together with this code.

  • malignant neuroleptic syndrome (G21.0)
  • Huntington's disease (G10) (from G21)
  • neurocognitive disorder with Lewy bodies (G31.83) (from G21)
  • Shy-Drager syndrome (G90.3) (from G21)
  • syphilitic Parkinsonism (A52.19) (from G21)

Excludes2

Not included here — may be reported together when both conditions exist.

  • certain conditions originating in the perinatal period (P04-P96) (from G21)
  • certain infectious and parasitic diseases (A00-B99) (from G21)
  • complications of pregnancy, childbirth and the puerperium (O00-O9A) (from G21)
  • congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99) (from G21)
  • endocrine, nutritional and metabolic diseases (E00-E88) (from G21)
  • injury, poisoning and certain other consequences of external causes (S00-T88) (from G21)
  • neoplasms (C00-D49) (from G21)
  • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94) (from G21)

Use additional code

Add a code to identify the following, if applicable.

Also known as

  • Parkinsonism, due to drugs NEC, neuroleptic
  • Parkinsonism, neuroleptic induced

Parent code

  • G21.1Other drug-induced secondary parkinsonismHeader

Related codes

  • G21.19Other drug induced secondary parkinsonismBillable

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