K11.21

K11.21: Acute sialoadenitis

Billable / specific codeICD-10-CM

K11.21 is a billable, specific ICD-10-CM code for acute sialoadenitis. It is valid for submission on a claim.

Check K11.21 with the rest of the claim: free scrubber

Excludes1: never code together

These conditions cannot occur together. Billing both on the same encounter is a denial.

acute recurrent sialoadenitis (K11.22)

Excludes1 inherited from the categories above K11.21

A category’s note binds every code beneath it.

Written on K11.2: Sialoadenitis

epidemic parotitis (B26.-)
mumps (B26.-)
uveoparotid fever [Heerfordt] (D86.89)

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Medicare coverage

K11.21 is named in 1 Medicare coverage policy: 1 listing it as supporting medical necessity. Which one applies depends on your Medicare contractor.

A57204Billing and Coding: MRI and CT Scans of the Head and Neck

Alphabetic index entries that lead here

Sialoadenitis›acute

Code history

Unchanged in every release from FY2024 to FY2027.