ICD-10 Code G90.519 – Complex regional pain syndrome I of unspecified upper limb (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code G90.519 – Complex regional pain syndrome I of unspecified upper limb
What it is
G90.519 identifies complex regional pain syndrome type I affecting an unspecified upper limb. Use it when the record shows CRPS without a documented nerve injury and the affected arm side is not specified.
Clinical signs
Typical findings include persistent regional pain that is disproportionate to the injury, plus swelling, temperature or color change, and altered sensation. Clinical features vary; refer to documentation.
When to use this code
Use this code when the provider documents CRPS type I in an upper limb and does not name right or left. It also fits when the note describes autonomic or sensory changes consistent with CRPS and no nerve lesion is recorded. Check documentation if the site or type is unclear.
Do not use for
Do not use this code for CRPS type II, which involves a documented nerve injury. Also avoid it when the record specifies a different limb, a different pain disorder, or does not support CRPS.
Coding tip
Confirm both the CRPS type and laterality in the note before assigning G90.519.