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 2026, 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.
Hypohidrosis
Abnormally diminished or absent perspiration. Both generalized and segmented (reduced or absent sweating in circumscribed locations) forms of the disease are usually associated with other underlying conditions.
Mumps
An acute infectious disease caused by RUBULAVIRUS, spread by direct contact, airborne droplet nuclei, fomites contaminated by infectious saliva, and perhaps urine, and usually seen in children under the age of 15, although adults may also be affected. (From Dorland, 28th ed)
Oral Fistula
An abnormal passage within the mouth communicating between two or more anatomical structures.
Parotitis
INFLAMMATION of the PAROTID GLAND.
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.
Rubulavirus
A genus of the family PARAMYXOVIRIDAE (subfamily PARAMYXOVIRINAE) where all the species have hemagglutinin and neuraminidase activities but lack a C protein. MUMPS VIRUS is the type species.
Xerostomia
Decreased salivary flow.
About the K11 Code Range
The ICD-10 code section K11 is designated for diseases of the salivary glands, which include a variety of conditions affecting these glands responsible for saliva production. This coding group covers disorders such as atrophy, hypertrophy, inflammation, obstruction, and malfunction of salivary glands.
This section features specific codes like K11.0 for atrophy of salivary glands, which may be known as atrophy of the parotid, submandibular, or sublingual glands. Conditions involving enlargement, like hypertrophy (K11.1), include terms such as adenomatoid hyperplasia and hyperplasia of minor salivary glands. The codes for sialoadenitis (inflammation of the salivary gland) range from unspecified (K11.20) to acute, recurrent, and chronic forms (K11.21-K11.23). Other important conditions coded here include salivary gland abscess (K11.3), fistula (K11.4), and sialolithiasis, which involves salivary stones (K11.5). Disorders of secretion, including xerostomia (dry mouth), fall under K11.7. Additional salivary gland diseases like necrotizing sialometaplasia and duct stenosis are covered by K11.8, while K11.9 denotes unspecified salivary gland diseases. These codes help medical coders accurately classify a wide range of salivary gland disorders for clinical and billing purposes, ensuring proper documentation of conditions such as parotitis, ranula, and salivary duct obstruction within the ICD-10 system.
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, 2025 through September 30, 2026. 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 2026 ICD-10-CM Tabular List and order file, effective October 1, 2025 through September 30, 2026.
