D09.9 — Carcinoma in situ, unspecified
Is D09.9 billable?
Yes, but D09.9 is an unspecified code. D09.9 is a valid, billable ICD-10-CM code for encounters from October 1, 2026 through September 30, 2027. However, D09.9 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 D09.9 — the more specific alternatives are listed below.
D09.9 at a glance
| Code | D09.9 |
|---|---|
| Description | Carcinoma in situ, unspecified |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Which MS-DRGs does D09.9 group to?
D09.9 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
Excludes1 — never code together — inherited from D09
The conditions below can never be reported together with D09.9 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
- melanoma in situ (D03.-)
How long has D09.9 existed?
D09.9 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.