C01 — Malignant neoplasm of base of tongue
Is C01 billable?
Yes — C01 is billable for FY2027. C01 is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. C01 may be submitted for encounters from October 1, 2026 through September 30, 2027.
C01 at a glance
| Code | C01 |
|---|---|
| Description | Malignant neoplasm of base of tongue |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Which MS-DRGs does C01 group to?
C01 sits in MDC Pre 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.
- 011Tracheostomy for Face, Mouth and Neck Diagnoses or Laryngectomy with MCCsurgical
- 012Tracheostomy for Face, Mouth and Neck Diagnoses or Laryngectomy with CCsurgical
- 013Tracheostomy for Face, Mouth and Neck Diagnoses or Laryngectomy without CC/MCCsurgical
Use additional code
Report an additional code alongside C01 to fully describe the condition. C01 is sequenced first.
Inclusion terms
Alternative wording in documentation that is classified to C01.
- Malignant neoplasm of dorsal surface of base of tongue
- Malignant neoplasm of fixed part of tongue NOS
- Malignant neoplasm of posterior third of tongue
How long has C01 existed?
C01 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.