Is K13.0 a billable ICD-10-CM code?

Yes. K13.0 is a billable, specific ICD-10-CM code and is valid for submission on a claim.

Where does K13.0 sit in the tabular list?

Diseases of the digestive system (K00-K95), in the block Diseases of oral cavity and salivary glands (K00-K14).

What cannot be coded together with K13.0?

K13.0 carries Excludes1 notes, which means the conditions they list can never be coded together with it on the same encounter.

K13.0

K13.0 — Diseases of lips

Billable / specific codeICD-10-CM

K13.0 is a billable, specific ICD-10-CM code for diseases of lips. It is valid for submission on a claim.

Excludes1 — never code together

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

ariboflavinosis (E53.0)
cheilitis due to radiation-related disorders (L55-L59)
congenital fistula of lips (Q38.0)
congenital hypertrophy of lips (Q18.6)
Perlèche due to candidiasis (B37.83)
Perlèche due to riboflavin deficiency (E53.0)

Inclusion terms

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

Abscess of lips
Angular cheilitis
Cellulitis of lips
Cheilitis NOS
Cheilodynia
Cheilosis
Exfoliative cheilitis
Fistula of lips
Glandular cheilitis
Hypertrophy of lips
Perlèche NEC

Excludes2 inherited from the categories above K13.0

Also inherited, and the opposite of Excludes1: these conditions are not part of K13.0, but a patient can have both, so you may code both.

Written on K13 — Other diseases of lip and oral mucosa

certain disorders of gingiva and edentulous alveolar ridge (K05-K06)
cysts of oral region (K09.-)
diseases of tongue (K14.-)
stomatitis and related lesions (K12.-)

Other codes that can never be billed with K13.0

These codes carry an Excludes1 note pointing at K13.0. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading K13.0 alone.

K12Stomatitis and related lesions

Risk adjustment

K13.0 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.

Medicare coverage

K13.0 is named in 2 Medicare coverage policies — 2 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.

A54111Billing and Coding: Speech Language Pathology (SLP) Services: Communication Disorders
A56766Billing and Coding: Incision and Drainage (I&D) of Abscess of Skin, Subcutaneous and Accessory Structures

How K13.0 is indexed

Coders do not find codes by browsing the tabular list — they look them up in the alphabetic index, under the word the physician wrote. These are the index entries that lead here, so you can see which chart wordings map to K13.0.

Angulus infectiosus(lips)
Baelz's disease(cheilitis glandularis apostematosa)
Cheilitis(acute) (angular) (catarrhal) (chronic) (exfoliative) (gangrenous) (glandular) (infectional) (suppurative) (ulcerative) (vesicular)
Cheilodynia
Cheilosis(angular)
Myxadenitis labialis
Perlèche NEC
Puente's disease(simple glandular cheilitis)
Abscess›lip
Atrophy, atrophic›lip
Cellulitis›lip
Cyst›lip(gland)

Code history

K13.0 has not changed since FY2024 — no addition, revision or deletion across the three most recent ICD-10-CM releases.

Related codes at this level

Codes that share K13. If K13.0 is not quite right, the correct code is usually one of these.

Questions about K13.0

Is K13.0 a billable ICD-10-CM code?: Yes. K13.0 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does K13.0 sit in the tabular list?: Diseases of the digestive system (K00-K95), in the block Diseases of oral cavity and salivary glands (K00-K14).
What cannot be coded together with K13.0?: K13.0 carries Excludes1 notes, which means the conditions they list can never be coded together with it on the same encounter.