D19.9 — Benign neoplasm of mesothelial tissue, unspecified
D19.9 is a billable, specific ICD-10-CM code for benign neoplasm of mesothelial tissue, unspecified. It is valid for submission on a claim.
Inclusion terms
Alternative wordings a physician may use in the chart for this same code.
- Benign mesothelioma NOS
Other codes that can never be billed with D19.9
These codes carry an Excludes1 note pointing at D19.9. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading D19.9 alone.
Risk adjustment
D19.9 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.
Medicare coverage
D19.9 is named in 5 Medicare coverage policies — 5 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.
- A56695Billing and Coding: Implantable Infusion Pump
- A57452Billing and Coding: Peripheral Nerve Blocks
- A57452Billing and Coding: Peripheral Nerve Blocks
- A57788Billing and Coding: Peripheral Nerve Blocks
How D19.9 is indexed
Coders do not find codes by browsing the tabular list — they look them up in the alphabetic index, under the word the physician wrote. These are the index entries that lead here, so you can see which chart wordings map to D19.9.
- Mesothelioma›benign›unspecified site
- Mesothelioma›biphasic›benign›unspecified site
- Mesothelioma›epithelioid›benign›unspecified site
- Mesothelioma›fibrous›benign›unspecified site
Code history
D19.9 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 D19. If D19.9 is not quite right, the correct code is usually one of these.
Questions about D19.9
- Is D19.9 a billable ICD-10-CM code?
- Yes. D19.9 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does D19.9 sit in the tabular list?
- Neoplasms (C00-D49), in the block Benign neoplasms, except benign neuroendocrine tumors (D10-D36).