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G21.11

Neuroleptic induced parkinsonism

Billable FY2026 2025-10-01 → 2026-09-30
Exclusions 13 never code together
G21code
Excludes1
  • Huntington's disease (G10)G10
  • neurocognitive disorder with Lewy bodies (G31.83)G31.83
  • Shy-Drager syndrome (G90.3)G90.3
  • syphilitic Parkinsonism (A52.19)A52.19
G21.11code
Excludes1
  • malignant neuroleptic syndrome (G21.0)G21.0
G00-G99chapter
Excludes2
  • certain conditions originating in the perinatal period (P04-P96)P04-P96
  • certain infectious and parasitic diseases (A00-B99)A00-B99
  • complications of pregnancy, childbirth and the puerperium (O00-O9A)O00-O9A
  • congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)Q00-Q99
  • endocrine, nutritional and metabolic diseases (E00-E88)E00-E88
  • injury, poisoning and certain other consequences of external causes (S00-T88)S00-T88
  • neoplasms (C00-D49)C00-D49
  • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)R00-R94

Excludes1 — never code together. The excluded condition and this one are mutually exclusive.

Excludes2 — not included here, but the patient may have both. Code both when documented.

Instructional notes 1
G21.11code
Use additional code
Index entries leading here 1
Alongside this code 1 same parent — G21.1
Additional references
AHA Coding Clinic® Licence required

Official coding advice for this code. Published by the American Hospital Association. Not included in this installation.

Risk adjustment

CMS22HCC78 ESRD21HCC78 ESRD24HCC78 RX08HCC161

Presence is a property of the code. Untick a model to hide it everywhere.

This code

Billable
yes
Code set
FY2026
Parent
G21.1
Block
G20-G26
Siblings
1

Present FY2024–FY2027.