MCMedicalCodingSoftware
G90.50

G90.50: Complex regional pain syndrome I, unspecified

Billable / specific codeICD-10-CM

G90.50 is a billable, specific ICD-10-CM code for complex regional pain syndrome i, unspecified. It is valid for submission on a claim.

Check G90.50 with the rest of the claim: free scrubber

Excludes1 inherited from the categories above G90.50

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)

Risk adjustment

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

Medicare coverage

G90.50 is named in 16 Medicare coverage policies: 16 listing it as supporting medical necessity. Which one applies depends on your Medicare contractor.

  • A54954Billing and Coding: Autonomic Function Tests
  • A55530Billing and Coding: Peripheral Nerve Stimulation
  • A56034Billing and Coding: Nerve Blockade for Treatment of Chronic Pain and Neuropathy
  • A56607Billing and Coding: Continuous Peripheral Nerve Blocks (CPNB)

Alphabetic index entries that lead here

  • Syndrome›pain›complex regional I

Code history

Unchanged in every release from FY2024 to FY2027.

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.