2026 ICD-10-CM Diagnosis Code C14.8Malignant neoplasm of overlapping sites of lip, oral cavity and pharynx
ICD-10-CM Codes›C00–D49›C00-C14›C14
- Billable — Valid for Submission
- Risk Adjusts — HCC 21
- Chronic Condition
C14.8 is a billable ICD-10-CM diagnosis code for malignant neoplasm of overlapping sites of lip, oral cavity and pharynx. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 11 through 13, 146 through 148. Coders also document this condition as carcinoma of lip, oral cavity and pharynx. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Head and neck cancers - all other types.
For Medicare Advantage risk adjustment, C14.8 maps to CMS-HCC Category 21 (Lymphoma and Other Cancers) under the V28 model, adding a risk factor of about 0.671 for a community, non-dual, aged beneficiary in payment year 2026.
Code Identity
Code Classification
Medicare Risk Adjustment (HCC)Billing
C14.8 maps to a payment category in the CMS-HCC model used to risk-adjust Medicare Advantage payments. Weights are the published community factors for payment year 2026.
Source: CMS Payment Year 2026 risk adjustment mappings and model software. Weights are relative factors, not dollar amounts; a beneficiary's total RAF also includes demographics and interactions. Browse all CMS-HCC categories.
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Carcinoma of lip, oral cavity and pharynx
- Malignant neoplasm of gum and contiguous sites
- Malignant neoplasm of lip, oral cavity and pharynx
- Malignant neoplasm of oral cavity and lip and salivary gland
- Neoplasm of oral cavity and lip and salivary gland
- Overlapping malignant neoplasm of lip
- Overlapping malignant neoplasm of lip, oral cavity and pharynx
- Overlapping malignant neoplasm of oral cavity and lip and salivary gland
- Overlapping neoplasm of oral cavity and lip and salivary gland
- Primary malignant neoplasm of gum and contiguous sites
Tabular List NotesGuidance
Coding notes and annotation back-references applicable to this code.
Inclusion Terms
- Primary malignant neoplasm of two or more contiguous sites of lip, oral cavity and pharynx
Type 1 Excludes
- 'book leaf' neoplasm [ventral surface of tongue and floor of mouth] C06.89
These terms are the conditions for which that code is to be used. The terms may be synonyms of the code title, or, in the case of "other specified" codes, the terms are a list of the various conditions assigned to that code. The inclusion terms are not necessarily exhaustive. Additional terms found only in the Alphabetic Index may also be assigned to a code.
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Table of NeoplasmsClinical
Patient EducationClinical
Throat Cancer
Throat cancer is a type of head and neck cancer. Throat cancer has different names, depending on which part of the throat is affected. The different parts of your throat are called the oropharynx, the hypopharynx, the nasopharynx, and the larynx, or voice box.
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Convert C14.8 to ICD-9-CMHistory
Code HistoryHistory
Questions About C14.8Overview
Is C14.8 a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report malignant neoplasm of overlapping sites of lip, oral cavity and pharynx on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
What MS-DRG does C14.8 group to?
When malignant neoplasm of overlapping sites of lip, oral cavity and pharynx is the principal diagnosis on an inpatient stay, it groups to MS-DRG 11, 12, 13, 146, 147, 148, with relative weights from 0.7971 to 5.4541 depending on complications. Higher weights mean higher Medicare reimbursement.
What is the ICD-9 equivalent of C14.8?
Under the General Equivalence Mappings, malignant neoplasm of overlapping sites of lip, oral cavity and pharynx converts to ICD-9-CM 149.8 (mal neo oral/pharynx NEC) and 149.9 (mal neo orophryn ill-def). The mapping is approximate, so confirm the match fits the documentation.
What HCC is C14.8?
C14.8 (malignant neoplasm of overlapping sites of lip, oral cavity and pharynx) maps to CMS-HCC Category 21 (Lymphoma and Other Cancers), commonly written as HCC 21, in the CMS-HCC V28 model used for Medicare Advantage risk adjustment in payment year 2026. It mapped to HCC 11 under the retired V24 model. It also maps in the PACE (CMS-HCC V22), ESRD (V21), and ESRD (V24) models. It does not map to any RxHCC in the Part D prescription drug model.
Does C14.8 risk-adjust for Medicare Advantage payment?
Yes. When documented and reported on a Medicare Advantage encounter, C14.8 adds a risk adjustment factor of about 0.671 to the beneficiary's RAF score for a community, non-dual, aged enrollee (published V28 weights range from 0.493 to 0.739 depending on the payment segment). A more severe related category (HCC 17, HCC 18, HCC 19, and HCC 20) supersedes it when both are reported. See the full factor table on the HCC 21 category page.
