C09.0 MALIGNANT NEOPLASM OF TONSILLAR FOSSA

Home > ICD-10 List > Neoplasms > Malignant neoplasms of lip, oral cavity and pharynx (C00-C14) > Malignant neoplasm of tonsil (C09) > C09.0

Code Information

Diagnosis Code: C09.0

Short Description: Malignant neoplasm of tonsillar fossa

Long Description: Malignant neoplasm of tonsillar fossa

The code C09.0 is VALID for claim submission

Code Classification:

Neoplasms (C00–D49)
- Malignant neoplasms of lip, oral cavity and pharynx (C00-C14)
  - Malignant neoplasm of tonsil (C09)
    - C09.0 Malignant neoplasm of tonsillar fossa

Code Version: 2022 ICD-10-CM

Synonyms

Malignant tumor of tonsillar fossa
Neoplasm of tonsillar fossa
Neoplasm of tonsillar fossa
Neoplasm of tonsillar fossa
Primary malignant neoplasm of lateral wall of oropharynx
Primary malignant neoplasm of lateral wall of oropharynx
Primary malignant neoplasm of tonsillar fossa
Primary squamous cell carcinoma of lateral wall of oropharynx
Primary squamous cell carcinoma of tonsillar fossa
Squamous cell carcinoma of lateral wall of oropharynx

Crosswalk Information

ICD-10 Code		ICD-9 Code	ICD-9 Description
C09.0		146.1	Mal neo tonsillar fossa

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
C09.1	Malignant neoplasm of tonsillar pillar (anterior) (posterior)
C09.8	Malignant neoplasm of overlapping sites of tonsil
C09.9	Malignant neoplasm of tonsil, unspecified

This page was last updated on: 10/1/2023

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