C09.1
Billable codeMalignant neoplasm of tonsillar pillar (anterior) (posterior)
The ICD-10 code for malignant neoplasm of tonsillar pillar (anterior) (posterior) is C09.1.
Documentation support
General coding-documentation guidance — not a substitute for payer-specific requirements or professional coding judgment.
- •As a general rule, code to the highest level of specificity supported by the documentation in the medical record.
Related codes in this category
- C09.0Malignant neoplasm of tonsillar fossa
- C09.8Malignant neoplasm of overlapping sites of tonsil
- C09.9Malignant neoplasm of tonsil, unspecified
- C09.1Malignant neoplasm of tonsillar pillar (anterior) (posterior)
ICD-9-CM equivalent
Informational only — GEM mappings are approximate, not guaranteed one-to-one equivalents. Verify before use in billing.
- 1462
Associated MS-DRGs
C09.1 can serve as the principal diagnosis for these Medicare Severity Diagnosis-Related Groups.
Informational only — actual DRG assignment also depends on procedures, complications/comorbidities (CC/MCC), discharge status, and payer-specific rules not reflected here.
- DRG 011Tracheostomy for Face, Mouth and Neck Diagnoses or Laryngectomy with MCC
- DRG 012Tracheostomy for Face, Mouth and Neck Diagnoses or Laryngectomy with CC
- DRG 013Tracheostomy for Face, Mouth and Neck Diagnoses or Laryngectomy without CC/MCC
- DRG 146Ear, Nose, Mouth and Throat Malignancy with MCC
- DRG 147Ear, Nose, Mouth and Throat Malignancy with CC
- DRG 148Ear, Nose, Mouth and Throat Malignancy without CC/MCC