G58.8 — Other specified mononeuropathies
G58.8 is a billable, specific ICD-10-CM code for other specified mononeuropathies. It is valid for submission on a claim.
Risk adjustment
G58.8 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
G58.8 is named in 21 Medicare coverage policies — 19 listing it as supporting medical necessity, and 2 listing it as NOT covered. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.
- A56731Billing and Coding: Nerve Blocks and Electrostimulation for Peripheral Neuropathynot covered
- A57663Billing and Coding: Nerve Blocks for Peripheral Neuropathynot covered
- A53064Billing and Coding: Outpatient Occupational Therapy
- A54095Billing and Coding: Nerve Conduction Studies and Electromyography
How G58.8 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 G58.8.
- Mononeuritis›specified NEC
- Mononeuropathy›specified NEC
- Neuralgia, neuralgic›specified nerve NEC
- Neuritis›specified nerve NEC
- Neuroma›interdigital
- Disorder›nerve›phrenic
- Disorder›nerve›specified NEC
- Palsy›nerve›specified NEC
Related codes at this level
Codes that share G58. If G58.8 is not quite right, the correct code is usually one of these.
Questions about G58.8
- Is G58.8 a billable ICD-10-CM code?
- Yes. G58.8 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does G58.8 sit in the tabular list?
- Diseases of the nervous system (G00-G99), in the block Nerve, nerve root and plexus disorders (G50-G59).