Diseases of salivary glands (K11) ICD-10-CM
The K11 code range covers diseases of salivary glands with 15 ICD-10-CM diagnosis codes. 13 of them are billable and valid for claim submission in fiscal year 2027, and the category headers group them but cannot themselves be billed.
Use Additional Code
The “use additional code” indicates that a secondary code could be used to further specify the patient’s condition. This note is not mandatory and is only used if enough information is available to assign an additional code.
Codes in the K11 Range 15 codes · 13 billable
- K11 Diseases of salivary glandsNon-billable
- K11.0 Atrophy of salivary gland
- K11.1 Hypertrophy of salivary gland
- K11.2 SialoadenitisNon-billable
- K11.20 Sialoadenitis, unspecified
- K11.21 Acute sialoadenitis
- K11.22 Acute recurrent sialoadenitis
- K11.23 Chronic sialoadenitis
- K11.3 Abscess of salivary gland
- K11.4 Fistula of salivary gland
- K11.5 Sialolithiasis
- K11.6 Mucocele of salivary gland
- K11.7 Disturbances of salivary secretion
- K11.8 Other diseases of salivary glands
- K11.9 Disease of salivary gland, unspecified
Clinical Terms in This Code Range
Definitions from the National Library of Medicine for conditions coded in the K11 range.
Ranula
A form of retention cyst of the floor of the mouth, usually due to obstruction of the ducts of the submaxillary or sublingual glands, presenting a slowly enlarging painless deep burrowing mucocele of one side of the mouth. It is also called sublingual cyst and sublingual ptyalocele.
Salivary Gland Calculi
Calculi occurring in a salivary gland. Most salivary gland calculi occur in the submandibular gland, but can also occur in the parotid gland and in the sublingual and minor salivary glands.
Sialadenitis
INFLAMMATION of salivary tissue (SALIVARY GLANDS), usually due to INFECTION or injuries.
Sialometaplasia, Necrotizing
A benign, inflammatory, variably ulcerated, occasionally bilateral, self-healing lesion of the minor salivary glands that is often confused clinically and histologically with carcinoma.
Sialorrhea
Increased salivary flow.
Xerostomia
Decreased salivary flow.
About the K11 Code Range
Salivary gland diseases include changes in gland size, inflammation, and disturbances in saliva secretion.
Within K11, K11.0 describes gland shrinkage, while K11.1 describes enlargement. K11.2 groups salivary gland inflammation, called sialoadenitis. Its subdivisions distinguish acute, acute recurrent, chronic, and unspecified inflammation. The remaining subdivisions identify other named gland conditions, saliva secretion disturbances, and other or unspecified gland disease.
Questions About This Page
How many billable codes are in the K11 range?
Of the 15 codes in this range, 13 are billable and valid for claim submission from October 1, 2026 through September 30, 2027. Category header codes group them but cannot be reported on claims.
What does the K11 range classify?
The range classifies diseases of salivary glands. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.
Related References
Source: CMS FY 2027 ICD-10-CM Tabular List and order file, effective October 1, 2026 through September 30, 2027.
