C11.1Billable
Malignant neoplasm of posterior wall of nasopharynx
- Chapter
- 2. Neoplasms
- Category
- C11
- Effective date
- October 1, 2026
Related codes in category C11
C11Malignant neoplasm of nasopharynxC11.0Malignant neoplasm of superior wall of nasopharynxYesC11.2Malignant neoplasm of lateral wall of nasopharynxYesC11.3Malignant neoplasm of anterior wall of nasopharynxYesC11.8Malignant neoplasm of overlapping sites of nasopharynxYesC11.9Malignant neoplasm of nasopharynx, unspecifiedYes
Frequently asked questions
What is ICD-10 code C11.1?
C11.1 is an ICD-10-CM diagnosis code for Malignant neoplasm of posterior wall of nasopharynx.
Is C11.1 a billable code?
Yes. C11.1 is billable and specific enough to be used on a claim.
What ICD-10-CM chapter is C11.1 in?
C11.1 falls under Chapter 2: Neoplasms.
When did C11.1 become effective?
C11.1 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.
What other codes are related to C11.1?
C11.1 belongs to category C11, which includes 6 other codes — see the related codes list on this page.
ICD-10-CM data maintained by CDC/CMS (public domain). Always verify codes with authoritative sources before making coding or billing decisions.