C09.1
Malignant neoplasm of tonsillar pillar (anterior) (posterior)
- Release
- FY 2027
- Effective
Hierarchy
Where C09.1 sits in the official hierarchy. Each level is the code it is classified under.
- C09 Parent Malignant neoplasm of tonsil
- C09.1 This code Malignant neoplasm of tonsillar pillar (anterior) (posterior)
Official Coding Notes
Reproduced verbatim from the FY 2027 ICD-10-CM files. Notes labelled as inherited are declared on a parent code and apply here too.
Use Additional Code
alcohol abuse and dependence ( F10 .-)
Inherited from C09 — Malignant neoplasm of tonsil
Use Additional Code
exposure to environmental tobacco smoke ( Z77.22 )
Inherited from C09 — Malignant neoplasm of tonsil
Use Additional Code
exposure to tobacco smoke in the perinatal period ( P96.81 )
Inherited from C09 — Malignant neoplasm of tonsil
Use Additional Code
history of tobacco dependence ( Z87.891 )
Inherited from C09 — Malignant neoplasm of tonsil
Version History
How C09.1 appears in each release imported from the official files, newest first.
-
FY 2027 Effective
CurrentMalignant neoplasm of tonsillar pillar (anterior) (posterior)
-
FY 2026 Effective
UnchangedMalignant neoplasm of tonsillar pillar (anterior) (posterior)
Related Codes
Data Source
Code information on this page is derived from the FY 2027 ICD-10-CM files published by CDC NCHS and CMS.
- Release
- FY 2027
- Effective
- Source file
- icd10cm-code-descriptions-2027.zip
Official ICD-10-CM source files (opens in a new tab)
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