2026 ICD-10-CM Diagnosis Code K11.0Atrophy of salivary gland

ICD-10-CM Codes›K00–K95›K00-K14›K11

ICD-10-CM K11.0
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

K11.0 is a billable ICD-10-CM diagnosis code for atrophy of salivary gland. 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 atrophy of parotid gland. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Any dental condition including traumatic injury, Diseases of mouth; excluding dental, and Nontraumatic dental conditions.

Code Identity

ICD-10-CM Code
K11.0
Billable Status
Yes — Valid for Submission
Code Describes
Atrophy of salivary gland
Short Description
Atrophy of salivary gland
Same as the full description in the CMS dataset.
Parent Code
K11
Diseases of salivary glands

Code Classification

ChapterK00–K95Diseases of the digestive system
SectionK00-K14Diseases of oral cavity and salivary glands
CategoryK11Diseases of salivary glands
This CodeK11.0Atrophy of salivary gland

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Atrophy of parotid gland
  • Atrophy of salivary gland
  • Atrophy of sublingual gland
  • Atrophy of submandibular gland

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

External Cause of Injuries IndexGuidance

References for this code in the External Cause of Injuries Index.

    • Atrophy, atrophic(of)
      • parotid gland
    • Atrophy, atrophic(of)
      • salivary gland
    • Atrophy, atrophic(of)
      • sublingual gland
    • Atrophy, atrophic(of)
      • submandibular gland
    • Atrophy, atrophic(of)
      • submaxillary gland

Clinical ClassificationClinical

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

CCSR DEN001
Any dental condition including traumatic injury
Default principal diagnosis: inpatient No · outpatient No
CCSR DIG003
Diseases of mouth; excluding dental
Default principal diagnosis: inpatient Yes · outpatient Yes
CCSR DEN002
Nontraumatic dental conditions
Default principal diagnosis: inpatient No · outpatient No

Patient EducationClinical

Salivary Gland Disorders

Your salivary glands are in your mouth. You have three pairs of major salivary glands and hundreds of small (minor) glands. They make saliva (spit) and empty it into your mouth through openings called ducts. Saliva makes your food moist, which helps you chew and swallow. It helps you digest your food.

Read the full article at MedlinePlus

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

Convert K11.0 to ICD-9-CMHistory

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

ICD-9-CM
527.0 Salivary gland atrophy
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 K11.0Overview

Is K11.0 (Diseases of salivary glands) a billable code?

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

What MS-DRG does K11.0 group to?

When atrophy of salivary gland 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 K11.0?

Under the General Equivalence Mappings, atrophy of salivary gland converts to ICD-9-CM 527.0 (salivary gland atrophy). The mapping is a direct match.

Footnotes

[1] Chronic - a chronic condition code indicates a condition lasting 12 months or longer and its effect on the patient based on one or both of the following criteria:

  • The condition results in the need for ongoing intervention with medical products,treatment, services, and special equipment
  • The condition places limitations on self-care, independent living, and social interactions.