2026 ICD-10-CM Diagnosis Code D10.2Benign neoplasm of floor of mouth

ICD-10-CM Codes›C00–D49›D10-D36›D10

ICD-10-CM D10.2
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

D10.2 is a billable ICD-10-CM diagnosis code for benign neoplasm of floor of mouth. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 157 through 159. Coders also document this condition as benign neoplasm of anterior floor of mouth. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Benign neoplasms.

Code Identity

ICD-10-CM Code
D10.2
Billable Status
Yes — Valid for Submission
Code Describes
Benign neoplasm of floor of mouth
Short Description
Benign neoplasm of floor of mouth
Same as the full description in the CMS dataset.
Parent Code
D10
Benign neoplasm of mouth and pharynx

Code Classification

ChapterC00–D49Neoplasms
SectionD10-D36Benign neoplasms, except benign neuroendocrine tumors
CategoryD10Benign neoplasm of mouth and pharynx
This CodeD10.2Benign neoplasm of floor of mouth

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Benign neoplasm of anterior floor of mouth
  • Benign neoplasm of floor of mouth
  • Benign neoplasm of lateral portion of floor of mouth

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR NEO073
Benign neoplasms
Default principal diagnosis: inpatient Yes · outpatient Yes

Table of NeoplasmsClinical

Anatomical sites in the Table of Neoplasms that reference this code family.

SiteMalig.
Primary		Malig.
Secondary		Ca
in situ		BenignUncertainUnspec.
mouth › floorC04.9C79.89D00.06D10.2D37.09D49.0
mouth › floor › anterior portionC04.0C79.89D00.06D10.2D37.09D49.0
mouth › floor › lateral portionC04.1C79.89D00.06D10.2D37.09D49.0
sublingualC04.9C79.89D00.06D10.2D37.09D49.0

Patient EducationClinical

Benign Tumors

Tumors are abnormal growths in your body. They can be either benign or malignant. Benign tumors aren't cancer. Malignant ones are. Benign tumors grow only in one place. They cannot spread or invade other parts of your body. Even so, they can be dangerous if they press on vital organs, such as your brain.

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Convert D10.2 to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
210.3 Benign neo mouth floor
Exact Match The mapping is direct, with no qualifiers.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About D10.2Overview

Is D10.2 (Benign neoplasm of mouth and pharynx) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report benign neoplasm of floor of mouth on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does D10.2 group to?

When benign neoplasm of floor of mouth is the principal diagnosis on an inpatient stay, it groups to MS-DRG 157, 158, 159, with relative weights from 0.7085 to 1.7168 depending on complications. Higher weights mean higher Medicare reimbursement.

What is the ICD-9 equivalent of D10.2?

Under the General Equivalence Mappings, benign neoplasm of floor of mouth converts to ICD-9-CM 210.3 (benign neo mouth floor). The mapping is a direct match.

Footnotes

[1] Not chronic - A diagnosis code that does not fit the criteria for chronic condition (duration, ongoing medical treatment, and limitations) is considered not chronic. Some codes designated as not chronic are acute conditions. Other diagnosis codes that indicate a possible chronic condition, but for which the duration of the illness is not specified in the code description (i.e., we do not know the condition has lasted 12 months or longer) also are considered not chronic.