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G90.52

Complex regional pain syndrome I of lower limb

Not billable — category only FY2026 2025-10-01 → 2026-09-30
Exclusions 13 never code together
G90code
Excludes1
  • dysfunction of the autonomic nervous system due to alcohol (G31.2)G31.2
G90.5code
Excludes1
  • causalgia of lower limb (G57.7-)G57.7-
  • causalgia of upper limb (G56.4-)G56.4-
  • complex regional pain syndrome II of lower limb (G57.7-)G57.7-
  • complex regional pain syndrome II of upper limb (G56.4-)G56.4-
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
G90.5code
Inclusion terms
  • Reflex sympathetic dystrophy
Index entries leading here 1
  • Syndrome — see also Disease
    • pain — see also Pain
Alongside this code 3 same parent — G90.5
Subordinate codes 4
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

Maps to no condition category in any loaded model.

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

This code

Billable
no
Code set
FY2026
Parent
G90.5
Block
G89-G99
Siblings
3
Subordinate
4

Present FY2024–FY2027.