D33.1: Benign neoplasm of brain, infratentorial
D33.1 is a billable, specific ICD-10-CM code for benign neoplasm of brain, infratentorial. It is valid for submission on a claim.
Check D33.1 with the rest of the claim: free scrubberInclusion terms
Alternative wordings a physician may use in the chart for this same code.
- Benign neoplasm of brain stem
- Benign neoplasm of cerebellum
- Benign neoplasm of fourth ventricle
Excludes1 inherited from the categories above D33.1
A category’s note binds every code beneath it.
Other codes that can never be billed with D33.1
Their own Excludes1 notes name this code, so the conflict is not listed above.
- D33.0Benign neoplasm of brain, supratentorial
Risk adjustment
D33.1 risk-adjusts. Under the CMS-HCC V28 model it maps to this category:
- HCC 23 Prostate, Breast, and Other Cancers and Tumors0.186 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
D33.1 is named in 30 Medicare coverage policies: 30 listing it as supporting medical necessity. Which one applies depends on your Medicare contractor.
- A55315Billing and Coding: Proton Beam Therapy
- A56464Billing and Coding: Flow Cytometry
- A56537Billing and Coding: Scanning Computerized Ophthalmic Diagnostic Imaging (SCODI)
- A56551Billing and Coding: Visual Fields Testing
Alphabetic index entries that lead here
- Papilloma›choroid plexus›fourth ventricle
Code history
Unchanged in every release from FY2024 to FY2027.