D42.9 — Neoplasm of uncertain behavior of meninges, unspecified
D42.9 is a billable, specific ICD-10-CM code for neoplasm of uncertain behavior of meninges, unspecified. It is valid for submission on a claim.
Risk adjustment
D42.9 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.
Medicare coverage
D42.9 is named in 14 Medicare coverage policies — 14 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.
- A52480Oral Antiemetic Drugs (Replacement for Intravenous Antiemetics) - Policy Article
- A56537Billing and Coding: Scanning Computerized Ophthalmic Diagnostic Imaging (SCODI)
- A56580Billing and Coding: Computerized Axial Tomography (CT), Thorax
- A56612Billing and Coding: CT of the Head
Code history
D42.9 has not changed since FY2024 — no addition, revision or deletion across the three most recent ICD-10-CM releases.
Related codes at this level
Codes that share D42. If D42.9 is not quite right, the correct code is usually one of these.
Questions about D42.9
- Is D42.9 a billable ICD-10-CM code?
- Yes. D42.9 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does D42.9 sit in the tabular list?
- Neoplasms (C00-D49), in the block Neoplasms of uncertain behavior, polycythemia vera and myelodysplastic syndromes (D37-D48).