C33 — Malignant neoplasm of trachea
Is C33 billable?
Yes — C33 is billable for FY2027. C33 is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. C33 may be submitted for encounters from October 1, 2026 through September 30, 2027.
C33 at a glance
| Code | C33 |
|---|---|
| Description | Malignant neoplasm of trachea |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Which MS-DRGs does C33 group to?
C33 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
As a secondary diagnosis, C33 is a complication or comorbidity (CC), which can move a stay into a higher-paying DRG.
Use additional code
Report an additional code alongside C33 to fully describe the condition. C33 is sequenced first.
Excludes1 — never code together — inherited from C30-C39
The conditions below can never be reported together with C33 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
- mesothelioma (C45.-)
How long has C33 existed?
C33 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.