G04.82: Acute flaccid myelitis
G04.82 is a billable, specific ICD-10-CM code for acute flaccid myelitis. It is valid for submission on a claim.
Check G04.82 with the rest of the claim: free scrubberExcludes1: never code together
These conditions cannot occur together. Billing both on the same encounter is a denial.
- transverse myelitis (G37.3)
Excludes1 inherited from the categories above G04.82
A category’s note binds every code beneath it.
Excludes2 inherited from the categories above G04.82
Not part of this code, but both may be coded when both are present.
Other codes that can never be billed with G04.82
Their own Excludes1 notes name this code, so the conflict is not listed above.
Risk adjustment
G04.82 risk-adjusts. Under the CMS-HCC V28 model it maps to this category:
- HCC 182 Spinal Cord Disorders/Injuries0.478 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
G04.82 is named in 13 Medicare coverage policies: 13 listing it as supporting medical necessity. Which one applies depends on your Medicare contractor.
- A53057Billing and Coding: Home Health Occupational Therapy
- A53058Billing and Coding: Home Health Physical Therapy
- A53064Billing and Coding: Outpatient Occupational Therapy
- A53065Billing and Coding: Outpatient Physical Therapy
Alphabetic index entries that lead here
- Myelitis›flaccid
Code history
Unchanged in every release from FY2024 to FY2027.