D05.80 — Other specified type of carcinoma in situ of unspecified breast
Is D05.80 billable?
Yes, but D05.80 is an unspecified code. D05.80 is a valid, billable ICD-10-CM code for encounters from October 1, 2026 through September 30, 2027. However, D05.80 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 D05.80 — the more specific alternatives are listed below.
D05.80 at a glance
| Code | D05.80 |
|---|---|
| Description | Other specified type of carcinoma in situ of unspecified breast |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Which MS-DRGs does D05.80 group to?
D05.80 sits in MDC 09 and helps define the logic of 2 MS-DRGs (version 44, FY2027). Which one a stay actually groups to also depends on procedures and secondary diagnoses.
- 582Mastectomy for Malignancy with CC/MCCsurgical
- 583Mastectomy for Malignancy without CC/MCCsurgical
How is D05.80 listed in the Alphabetic Index?
The Alphabetic Index lists these routes under D05.8, the nearest indexed parent of D05.80. Use them to find the family, then select the specific code.
- Carcinoma-in-situ › breast NOS › specified type NEC
- Comedocarcinoma › noninfiltrating › breast
- Comedocarcinoma › noninfiltrating › unspecified site
- Adenocarcinoma › apocrine › in situ › breast
- Carcinoma-in-situ › lobular › with › intraductal › breast
- Carcinoma-in-situ › lobular › with › intraductal › unspecified site
Excludes1 — never code together — inherited from D05
The conditions below can never be reported together with D05.80 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
How long has D05.80 existed?
D05.80 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.