ICD-10 Code G90.513 – Complex Regional Pain Syndrome I of Upper Limb, Bilateral (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code G90.513 – Complex regional pain syndrome I of upper limb, bilateral
What it is
G90.513 identifies complex regional pain syndrome type I affecting both upper limbs. Use it when documentation shows regional pain with autonomic or trophic changes, and no confirmed nerve injury.
Clinical signs
Typical findings include persistent pain disproportionate to the injury, swelling, color or temperature change, and altered sweating. Range of motion may be limited; clinical features vary, so refer to documentation.
When to use this code
Use this code when the record clearly states bilateral upper-limb CRPS type I, sometimes called reflex sympathetic dystrophy. It fits cases involving both arms or hands, with symptoms extending beyond a single nerve distribution. Confirm the type I designation and bilateral site in the note.
Do not use for
Do not use G90.513 if the condition is documented as CRPS type II or if a specific nerve injury is confirmed. Do not assume bilateral involvement unless both upper limbs are documented.
Coding tip
Verify both the CRPS type and laterality in the provider note before assigning this code.