D19.9 — Benign neoplasm of mesothelial tissue, unspecified
Is D19.9 billable?
Yes, but D19.9 is an unspecified code. D19.9 is a valid, billable ICD-10-CM code for encounters from October 1, 2026 through September 30, 2027. However, D19.9 is an unspecified or catch-all code. Payers apply additional scrutiny to unspecified codes and many deny them when the medical record supports a more specific option, so check the documentation before selecting D19.9 — the more specific alternatives are listed below.
D19.9 at a glance
| Code | D19.9 |
|---|---|
| Description | Benign neoplasm of mesothelial tissue, unspecified |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Which MS-DRGs does D19.9 group to?
D19.9 sits in MDC 17 and helps define the logic of 3 MS-DRGs (version 44, FY2027). Which one a stay actually groups to also depends on procedures and secondary diagnoses.
- 826Myeloproliferative Disorders or Poorly Differentiated Neoplasms with Major O.R. Procedures with MCCsurgical
- 827Myeloproliferative Disorders or Poorly Differentiated Neoplasms with Major O.R. Procedures with CCsurgical
- 828Myeloproliferative Disorders or Poorly Differentiated Neoplasms with Major O.R. Procedures without CC/MCCsurgical
How is D19.9 listed in the Alphabetic Index?
These are the routes through the Alphabetic Index that lead to D19.9. They show the wording a clinician may have documented, which often differs from the Tabular description.
- Mesothelioma › benign › unspecified site (malignant)
- Mesothelioma › biphasic › benign › unspecified site (malignant)
- Mesothelioma › epithelioid › benign › unspecified site (malignant)
- Mesothelioma › fibrous › benign › unspecified site (malignant)
Inclusion terms
Alternative wording in documentation that is classified to D19.9.
- Benign mesothelioma NOS
How long has D19.9 existed?
D19.9 has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.
Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.