MCMedicalCodingSoftware
G70.9

G70.9: Myoneural disorder, unspecified

Billable / specific codeICD-10-CM

G70.9 is a billable, specific ICD-10-CM code for myoneural disorder, unspecified. It is valid for submission on a claim.

Check G70.9 with the rest of the claim: free scrubber

Excludes1 inherited from the categories above G70.9

A category’s note binds every code beneath it.

Written on G70: Myasthenia gravis and other myoneural disorders

Risk adjustment

G70.9 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. Look up the whole chart to see which of its HCCs the hierarchy would zero.

Medicare coverage

G70.9 is named in 7 Medicare coverage policies: 7 listing it as supporting medical necessity. Which one applies depends on your Medicare contractor.

  • A54095Billing and Coding: Nerve Conduction Studies and Electromyography
  • A56580Billing and Coding: Computerized Axial Tomography (CT), Thorax
  • A56619Billing and Coding: Nerve Conduction Studies and Electromyography
  • A56718Billing and Coding: Intravenous Immunoglobulin (IVIG)

Alphabetic index entries that lead here

  • Myasthenia
  • Neuromyopathy
  • Disease, diseased›myoneural
  • Disease, diseased›neuromuscular system
  • Disorder›myoneural
  • Disorder›neuromuscular
  • Syndrome›myasthenic

Code history

Unchanged in every release from FY2024 to FY2027.

Other codes under G70

ICD-10-CMFY2027· effective October 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release: see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.