K09.8

K09.8: Other cysts of oral region, not elsewhere classified

Billable / specific codeICD-10-CM

K09.8 is a billable, specific ICD-10-CM code for other cysts of oral region, not elsewhere classified. It is valid for submission on a claim.

Check K09.8 with the rest of the claim: free scrubber

Inclusion terms

Alternative wordings a physician may use in the chart for this same code.

Dermoid cyst
Epidermoid cyst
Lymphoepithelial cyst
Epstein's pearl

Excludes2 inherited from the categories above K09.8

Not part of this code, but both may be coded when both are present.

Written on K09: Cysts of oral region, not elsewhere classified

cysts of jaw (M27.0-, M27.4-)
radicular cyst (K04.8)

Other codes that can never be billed with K09.8

Their own Excludes1 notes name this code, so the conflict is not listed above.

M27.4Other and unspecified cysts of jaw

Risk adjustment

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

Medicare coverage

K09.8 is named in 3 Medicare coverage policies: 3 listing it as supporting medical necessity. Which one applies depends on your Medicare contractor.

A54111Billing and Coding: Speech Language Pathology (SLP) Services: Communication Disorders
A57044Billing and Coding: Removal of Benign Skin Lesions
A57204Billing and Coding: MRI and CT Scans of the Head and Neck

Alphabetic index entries that lead here

Cyst›buccal
Cyst›lymphoepithelial, oral soft tissue
Cyst›mouth
Epstein's›pearl
Pearl›Epstein's
Cyst›dermoid›mouth
Cyst›dermoid›oral soft tissue
Cyst›epidermal, epidermoid›mouth
Cyst›epidermal, epidermoid›oral soft tissue
Cyst›oral›region›specified NEC
Cyst›oral›soft tissue›specified NEC

Code history

Unchanged in every release from FY2024 to FY2027.