Diagnosis Code


Code Information

Diagnosis Code: C09.1

Short Description: Malig neoplasm of tonsillar pillar (anterior) (posterior)

Long Description: Malignant neoplasm of tonsillar pillar (anterior) (posterior)

The code C09.1 is VALID for claim submission

Code Classification:

  • Neoplasms (C00–D48)
    • Malignant neoplasms of lip, oral cavity and pharynx (C00-C14)
      • Malignant neoplasm of tonsil (C09)
        • C09.1 Malig neoplasm of tonsillar pillar (anterior) (posterior)

Code Version: 2018 ICD-10-CM


  • Malignant melanoma of oral cavity
  • Malignant melanoma of palatine arch
  • Malignant tumor of anterior pillar of fauces
  • Malignant tumor of tonsillar pillar
  • Primary malignant neoplasm of tonsillar pillar
  • Tumor of anterior pillar of fauces

Crosswalk Information

ICD-10 Code ICD-9 Code ICD-9 Description
C09.1 Right Arrow 146.2 Mal neo tonsil pillars
This ICD-10 to ICD-9 data is based on the 2018 General Equivalency Mapping (GEM) files published by the Centers for Medicare & Medicaid Services (CMS) for informational purposes only. The data is not an ICD-10 conversion tool and doesn’t guarantee clinical accuracy.

Similar Codes

ICD-10 Code ICD-10 Description
C09 Malignant neoplasm of tonsil
C09.0 Malignant neoplasm of tonsillar fossa
C09.8 Malignant neoplasm of overlapping sites of tonsil
C09.9 Malignant neoplasm of tonsil, unspecified

This page was last updated on: 1/1/2018