D02.4 — Carcinoma in situ of respiratory system, unspecified
Is D02.4 billable?
Yes, but D02.4 is an unspecified code. D02.4 is a valid, billable ICD-10-CM code for encounters from October 1, 2026 through September 30, 2027. However, D02.4 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 D02.4 — the more specific alternatives are listed below.
D02.4 at a glance
| Code | D02.4 |
|---|---|
| Description | Carcinoma in situ of respiratory system, unspecified |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Which MS-DRGs does D02.4 group to?
D02.4 sits in MDC 04 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.
- 180Respiratory Neoplasms with MCCmedical
- 181Respiratory Neoplasms with CCmedical
- 182Respiratory Neoplasms without CC/MCCmedical
Excludes1 — never code together — inherited from D02
The conditions below can never be reported together with D02.4 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.-)
Use additional code — inherited from D02
Report an additional code alongside D02.4 to fully describe the condition. D02.4 is sequenced first.
How long has D02.4 existed?
D02.4 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.