MCMedicalCodingSoftware
G90.52

G90.52: Complex regional pain syndrome I of lower limb

Non-billable headerICD-10-CM

G90.52 is a non-billable header ICD-10-CM code for complex regional pain syndrome i of lower limb. It cannot be billed on its own: choose one of the more specific child codes below.

Excludes1 inherited from the categories above G90.52

A category’s note binds every code beneath it.

Written on G90.5: Complex regional pain syndrome I (CRPS I)

  • causalgia of lower limb (G57.7-)
  • causalgia of upper limb (G56.4-)
  • complex regional pain syndrome II of lower limb (G57.7-)
  • complex regional pain syndrome II of upper limb (G56.4-)

Written on G90: Disorders of autonomic nervous system

  • dysfunction of the autonomic nervous system due to alcohol (G31.2)

Other codes that can never be billed with G90.52

Their own Excludes1 notes name this code, so the conflict is not listed above.

  • G56.4Causalgia of upper limb
  • G57.7Causalgia of lower limb

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Code history

Unchanged in every release from FY2024 to FY2027.

Code to one of these instead G90.52

4 child codes. Green means billable.

Other codes under G90.5

ICD-10-CMFY2027· effective October 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release: see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.