G90.50 — Complex regional pain syndrome I, unspecified
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.
Risk adjustment
G90.50 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.
Medicare coverage
G90.50 is named in 13 Medicare coverage policies — 13 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.
- 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)
How G90.50 is indexed
Coders do not find codes by browsing the tabular list — they look them up in the alphabetic index, under the word the physician wrote. These are the index entries that lead here, so you can see which chart wordings map to G90.50.
- Syndrome›pain›complex regional I
Related codes at this level
Codes that share G90.5. If G90.50 is not quite right, the correct code is usually one of these.
Questions about G90.50
- Is G90.50 a billable ICD-10-CM code?
- Yes. G90.50 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does G90.50 sit in the tabular list?
- Diseases of the nervous system (G00-G99), in the block Other disorders of the nervous system (G89-G99).