2026 ICD-10-CM Diagnosis Code K11.5Sialolithiasis

ICD-10-CM Codes›K00–K95›K00-K14›K11

ICD-10-CM K11.5
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

K11.5 is a billable ICD-10-CM diagnosis code for sialolithiasis. 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 parotid sialodocholithiasis. 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
K11.5
Billable Status
Yes — Valid for Submission
Code Describes
Sialolithiasis
Short Description
Sialolithiasis
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 CodeK11.5Sialolithiasis

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Parotid sialodocholithiasis
  • Parotid sialolithiasis
  • Sialodocholithiasis
  • Sialolithiasis
  • Sublingual sialodocholithiasis
  • Sublingual sialolithiasis
  • Submandibular sialodocholithiasis
  • Submandibular sialolithiasis

Tabular List NotesGuidance

Coding notes and annotation back-references applicable to this code.

Inclusion Terms

  • Calculus of salivary gland or duct
  • Stone of salivary gland or duct

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.

    • Calculus, calculi, calculous
      • parotid duct or gland
    • Calculus, calculi, calculous
      • salivary (duct) (gland)
    • Calculus, calculi, calculous
      • Stensen's duct
    • Calculus, calculi, calculous
      • sublingual duct or gland
    • Calculus, calculi, calculous
      • submandibular duct, gland or region
    • Calculus, calculi, calculous
      • submaxillary duct, gland or region
    • Calculus, calculi, calculous
      • Wharton's duct
    • Concretion
      • salivary gland (any)
    • Obstruction, obstructed, obstructive
      • salivary duct (any)
        • with calculus
    • Obstruction, obstructed, obstructive
      • submaxillary gland
        • with calculus
    • Ptyalolithiasis
    • Sialodocholithiasis
    • Sialolithiasis
    • Stone(s)
      • salivary gland or duct (any)

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 K11.5 to ICD-9-CMHistory

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

ICD-9-CM
527.5 Sialolithiasis
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 K11.5Overview

Is K11.5 (Diseases of salivary glands) a billable code?

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

What MS-DRG does K11.5 group to?

When sialolithiasis 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 K11.5?

Under the General Equivalence Mappings, sialolithiasis converts to ICD-9-CM 527.5 (sialolithiasis). 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.