ICD-10 Code G90.511 – Complex regional pain syndrome I of right upper limb (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code G90.511 – Complex regional pain syndrome I of right upper limb
What it is
G90.511 identifies complex regional pain syndrome type I affecting the right upper limb. It describes ongoing regional pain after injury or other trigger, without confirmed nerve injury.
Clinical signs
Typical findings include disproportionate pain, swelling, color or temperature changes, and altered skin sensitivity in the right arm or hand. Clinical features vary; refer to documentation.
When to use this code
Use this code when the provider documents CRPS type I limited to the right upper limb. It fits cases involving the arm, forearm, wrist, or hand when nerve injury is not documented.
Code only when the record clearly supports the diagnosis and laterality. If the note says reflex sympathetic dystrophy or algodystrophy for the same condition, confirm the documented type and site before coding.
Do not use for
Do not use G90.511 for CRPS type II, which involves confirmed nerve injury. Also avoid it if the pain is generalized, bilateral, or the right upper limb is not specified.
Coding tip
Check the provider’s documentation for both type I and right-sided upper-limb location before assigning this code.