G35-G37 — Demyelinating diseases of the central nervous system
ICD-10-CM codes G35-G37 cover demyelinating diseases of the central nervous system, within diseases of the nervous system. The block holds 27 codes across 3 categories, of which 21 are billable and 6 are header codes that cannot be submitted on a claim.
Risk adjustment in G35-G37
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 198 Multiple Sclerosis
- HCC 182 Spinal Cord Disorders/Injuries
What else to watch in G35-G37
- 22 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.