ICD-10-CM 2027
ICD-10 code for sialoadenitis
From the official ICD-10-CM alphabetic index entry “Sialoadenitis (any gland) (periodic) (suppurative)”. Page updated September 29, 2026.
About coding sialoadenitis
The ICD-10-CM code for sialoadenitis is K11.20 (Sialoadenitis, unspecified). The official index lists 3 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on K11.20.
Within K11.2, choose K11.20 (unspecified) only when documentation doesn't support a more specific option: acute sialoadenitis (K11.21), acute recurrent sialoadenitis (K11.22) and chronic sialoadenitis (K11.23).
Use an additional code to identify: alcohol abuse and dependence (F10.-), exposure to environmental tobacco smoke (Z77.22), exposure to tobacco smoke in the perinatal period (P96.81), history of tobacco dependence (Z87.891), occupational exposure to environmental tobacco smoke (Z57.31) and 2 more.
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
More specific sialoadenitis codes (official index)
Common questions about sialoadenitis ICD-10 codes
What is the ICD-10 code for sialoadenitis?
- K11.20 — Sialoadenitis, unspecified. More specific codes apply when the documentation supports them: K11.21, K11.22, K11.23.
What is the ICD-10 code for acute sialoadenitis?
- K11.21 — Acute sialoadenitis.
What is the ICD-10 code for chronic sialoadenitis?
- K11.23 — Chronic sialoadenitis.
Is K11.20 billable?
- Yes. K11.20 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can K11.20 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict K11.20 as a principal diagnosis.
Is K11.20 a CC or MCC?
- No. K11.20 is neither a CC nor an MCC under MS-DRG v44.0.