ICD-10 Code for Mononeuropathy
The default ICD-10-CM 2027 code for mononeuropathy is G58.9 – Mononeuropathy, unspecified. More specific codes depend on the details documented, as listed in the official index (10 codes, 5 billable).
- Main code
G58.9– Mononeuropathy, unspecified- Billable
- Yes
Index entries for Mononeuropathy
- carpal tunnel syndrome – see Syndrome, carpal tunnel
- diabetic NEC – see E08-E13 with .41
- femoral nerve – see Lesion, nerve, femoral
- ilioinguinal nerve –
G57.8-(header) - in diseases classified elsewhere
- intercostal –
G58.0 - lower limb –
G57.9-(header)- causalgia – see Causalgia, lower limb
- femoral nerve – see Lesion, nerve, femoral
- meralgia paresthetica –
G57.1-(header) - plantar nerve – see Lesion, nerve, plantar
- popliteal nerve – see Lesion, nerve, popliteal
- sciatic nerve – see Lesion, nerve, sciatic
- specified NEC –
G57.8-(header) - tarsal tunnel syndrome – see Syndrome, tarsal tunnel
- median nerve – see Lesion, nerve, median
- multiplex –
G58.7 - obturator nerve –
G57.8-(header) - popliteal nerve – see Lesion, nerve, popliteal
- radial nerve – see Lesion, nerve, radial
- saphenous nerve –
G57.8-(header) - specified NEC –
G58.8 - tarsal tunnel syndrome – see Syndrome, tarsal tunnel
- tuberculous –
A17.83 - ulnar nerve – see Lesion, nerve, ulnar
- upper limb –
G56.9-(header)- carpal tunnel syndrome – see Syndrome, carpal tunnel
- causalgia – see Causalgia
- median nerve – see Lesion, nerve, median
- radial nerve – see Lesion, nerve, radial
- specified site NEC –
G56.8-(header) - ulnar nerve – see Lesion, nerve, ulnar
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.