2026 ICD-10-CM Diagnosis Code D10.4Benign neoplasm of tonsil
ICD-10-CM Codes›C00–D49›D10-D36›D10
- Billable — Valid for Submission
- Not Chronic
D10.4 is a billable ICD-10-CM diagnosis code for benign neoplasm of tonsil. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 154 through 156. Coders also document this condition as benign neoplasm of lateral wall of oropharynx. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Benign neoplasms.
Code Identity
Code Classification
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Benign neoplasm of lateral wall of oropharynx
- Benign neoplasm of oropharyngeal wall
- Benign neoplasm of tonsil
- Benign neoplasm of Waldeyer's ring
- Mass of palatine tonsil
Tabular List NotesGuidance
Coding notes and annotation back-references applicable to this code.
Inclusion Terms
- Benign neoplasm of tonsil (faucial) (palatine)
Type 1 Excludes
- benign neoplasm of lingual tonsil D10.1
- benign neoplasm of pharyngeal tonsil D10.6
- benign neoplasm of tonsillar fossa D10.5
- benign neoplasm of tonsillar pillars D10.5
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
Anatomical sites in the Table of Neoplasms that reference this code family.
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.
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Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Convert D10.4 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About D10.4Overview
Is D10.4 (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 tonsil on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
What MS-DRG does D10.4 group to?
When benign neoplasm of tonsil is the principal diagnosis on an inpatient stay, it groups to MS-DRG 154, 155, 156, with relative weights from 0.6911 to 1.5635 depending on complications. Higher weights mean higher Medicare reimbursement.
What is the ICD-9 equivalent of D10.4?
Under the General Equivalence Mappings, benign neoplasm of tonsil converts to ICD-9-CM 210.5 (benign neoplasm tonsil). 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.
