ICD-10 Code for Causalgia
The default ICD-10-CM 2027 code for causalgia (upper limb) is G56.4 – Causalgia of upper limb (a header – choose a more specific code). More specific codes depend on the details documented, as listed in the official index (2 codes, 0 billable).
- Main code
G56.4– Causalgia of upper limb- Billable
- No – header code
Index entries for Causalgia
- lower limb –
G57.7-(header)
How to choose the right code
Start with the main term, then pick the indented subterm that matches the documentation (type, cause, site, laterality, episode of care). Always confirm the code in the tabular list: follow its Excludes1/Excludes2, “code first” and “use additional code” notes, and add a 7th character where required.
Source: CDC/NCHS ICD-10-CM FY2027 alphabetic index.