Is C11.8 a billable ICD-10 code?

Yes. C11.8 (Malignant neoplasm of overlapping sites of nasopharynx) is billable and can be used for insurance claims. Always verify payer-specific requirements.

C11.8 ✓ Billable

Malignant neoplasm of overlapping sites of nasopharynx

Q: What is ICD-10 code C11.8?

ICD-10-CM code C11.8 stands for "Malignant neoplasm of overlapping sites of nasopharynx". It is a billable code in the Neoplasms chapter, effective FY2026 (Oct 1, 2025 – Sep 30, 2026).

ICD-10-CM · FY2026 · Neoplasms

Code

C11.8

System

ICD-10-CM

Billable

Yes — valid for submission

Effective

FY2026

Chapter

Neoplasms

Source

CMS / CDC NCHS

⚠ Verify before billing. Confirm against the current CMS/NCHS ICD-10-CM files and your payer's rules before claims submission.

Frequently asked questions

What is ICD-10 code C11.8?

ICD-10-CM code C11.8 represents Malignant neoplasm of overlapping sites of nasopharynx. It is a billable diagnosis code in the Neoplasms chapter, effective October 1, 2025 – September 30, 2026.

Is C11.8 billable?

Yes. C11.8 is a valid billable ICD-10-CM code for insurance claims and clinical documentation.

What chapter is C11.8 in?

C11.8 belongs to the Neoplasms chapter (C00–D49) of ICD-10-CM.

Related codes in the C11 category

C11 Malignant neoplasm of nasopharynx Non-billable C11.0 Malignant neoplasm of superior wall of nasopharynx Billable C11.1 Malignant neoplasm of posterior wall of nasopharynx Billable C11.2 Malignant neoplasm of lateral wall of nasopharynx Billable C11.3 Malignant neoplasm of anterior wall of nasopharynx Billable C11.9 Malignant neoplasm of nasopharynx, unspecified Billable

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