D04.20 — Carcinoma in situ of skin of unspecified ear and external auricular canal
Is D04.20 billable?
Yes, but D04.20 is an unspecified code. D04.20 is a valid, billable ICD-10-CM code for encounters from October 1, 2026 through September 30, 2027. However, D04.20 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 D04.20 — the more specific alternatives are listed below.
D04.20 at a glance
| Code | D04.20 |
|---|---|
| Description | Carcinoma in situ of skin of unspecified ear and external auricular canal |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Which MS-DRGs does D04.20 group to?
D04.20 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.
- 606Minor Skin Disorders with MCCmedical
- 607Minor Skin Disorders without MCCmedical
Excludes1 — never code together — inherited from D04
The conditions below can never be reported together with D04.20 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 D04.20 existed?
D04.20 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.