G70-G73 — Diseases of myoneural junction and muscle
ICD-10-CM codes G70-G73 cover diseases of myoneural junction and muscle, within diseases of the nervous system. The block holds 62 codes across 4 categories, of which 48 are billable and 14 are header codes that cannot be submitted on a claim.
Risk adjustment in G70-G73
0 codes in this block map to a CMS-HCC, which means the diagnosis carries a risk-adjustment payment when it is documented and coded. Under-coding here is money left on the table; over-coding here is what audits are for.
- HCC 197 Muscular Dystrophy
- HCC 196 Myasthenia Gravis without (Acute) Exacerbation and Other Myoneural Disorders
- HCC 93 Rheumatoid Arthritis and Other Specified Inflammatory Rheumatic Disorders
- HCC 195 Myasthenia Gravis with (Acute) Exacerbation
What else to watch in G70-G73
- 48 codes are named in Medicare coverage policies. An LCD or NCD lists them as supporting medical necessity, or explicitly as not supporting it. Which applies depends on the MAC for your state.