G70.89 — Other specified myoneural disorders
G70.89 is a billable, specific ICD-10-CM code for other specified myoneural disorders. It is valid for submission on a claim.
Risk adjustment
G70.89 risk-adjusts. Under the CMS-HCC V28 model it maps to this category:
- HCC 196 Myasthenia Gravis without (Acute) Exacerbation and Other Myoneural Disorders0.516 RAF
Coefficient shown for the Community Non-dual Aged segment. A higher HCC in the same hierarchy will suppress this one, so capturing it does not always add score.
Medicare coverage
G70.89 is named in 16 Medicare coverage policies — 16 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.
- A54095Billing and Coding: Nerve Conduction Studies and Electromyography
- A54095Billing and Coding: Nerve Conduction Studies and Electromyography
- A54095Billing and Coding: Nerve Conduction Studies and Electromyography
- A54969Billing and Coding: Nerve Conduction Studies and Electromyography
How G70.89 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 G70.89.
- Disorder›myoneural›specified NEC
- Disorder›neuromuscular›specified NEC
Related codes at this level
Codes that share G70.8. If G70.89 is not quite right, the correct code is usually one of these.
Questions about G70.89
- Is G70.89 a billable ICD-10-CM code?
- Yes. G70.89 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does G70.89 sit in the tabular list?
- Diseases of the nervous system (G00-G99), in the block Diseases of myoneural junction and muscle (G70-G73).