ICD-10-CM 2027 diagnosis code
K13.0Diseases of lips
K13.0 is a valid, billable ICD-10-CM code for diseases of lips. It can be reported on claims for dates of service from October 1, 2026 – September 30, 2027.
Looking up by condition? See ICD-10 code for Cheilitis, ICD-10 code for Cheilosis, ICD-10 code for Cheilodynia, ICD-10 code for Perlèche NEC.
Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data
About K13.0
K13.0 is the ICD-10-CM diagnosis code for diseases of lips. It belongs to category K13 (other diseases of lip and oral mucosa), block K00-K14 (diseases of oral cavity and salivary glands) and chapter 11 (diseases of the digestive system). It is billable, so it can be reported on its own for dates of service from October 1, 2026 through September 30, 2027.
Within K13 (other diseases of lip and oral mucosa), K13.0 is specifically for diseases of lips. Related codes cover cheek and lip biting (K13.1), leukoplakia and other disturbances of oral epithelium, including tongue (K13.2), Hairy leukoplakia (K13.3), granuloma and granuloma-like lesions of oral mucosa (K13.4), oral submucous fibrosis (K13.5), Irritative hyperplasia of oral mucosa (K13.6) and other and unspecified lesions of oral mucosa (K13.7).
Don't report K13.0 together with the conditions in its Excludes1 note: ariboflavinosis (E53.0), cheilitis due to radiation-related disorders (L55-L59), congenital fistula of lips (Q38.0), congenital hypertrophy of lips (Q18.6) and 2 more.
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.
In MS-DRG v44.0, it is part of the grouping logic for DRG 011 (Tracheostomy for Face, Mouth and Neck Diagnoses or Laryngectomy with MCC, relative weight 5.6154), DRG 012 (Tracheostomy for Face, Mouth and Neck Diagnoses or Laryngectomy with CC, relative weight 4.381), DRG 013 (Tracheostomy for Face, Mouth and Neck Diagnoses or Laryngectomy without CC/MCC, relative weight 2.7307), DRG 157 (Dental and Oral Diseases with MCC, relative weight 1.809), DRG 158 (Dental and Oral Diseases with CC, relative weight 0.9366) and DRG 159 (Dental and Oral Diseases without CC/MCC, relative weight 0.6893), in Pre-MDC and MDC 03 (Diseases and Disorders of the Ear, Nose, Mouth and Throat), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.
Before ICD-10, this condition was coded in ICD-9-CM as 528.5 (diseases of lips).
Coding notes
- Abscess of lips
- Angular cheilitis
- Cellulitis of lips
- Cheilitis NOS
- Cheilodynia
- Cheilosis
- Exfoliative cheilitis
- Fistula of lips
- Glandular cheilitis
- Hypertrophy of lips
- Perlèche NEC
Notes that apply from higher levels
Instructions written at a parent level also apply to K13.0.
› From K13 Other diseases of lip and oral mucosa
- epithelial disturbances of tongue
- 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)
- tobacco dependence (F17.-)
- tobacco use (Z72.0)
Broader instructions also apply from Chapter 11: Diseases of the digestive system.
Alphabetic index entries
28 entriesTerms in the official ICD-10-CM index that lead to K13.0.
- Abscess (connective tissue) (embolic) (fistulous) (infective) (metastatic) (multiple) (pernicious) (pyogenic) (septic) › lip
- Angulus infectiosus (lips)
- Atrophy, atrophic (of) › lip
- Baelz's disease (cheilitis glandularis apostematosa)
- Cellulitis (diffuse) (phlegmonous) (septic) (suppurative) › lip
- Cheilitis (acute) (angular) (catarrhal) (chronic) (exfoliative) (gangrenous) (glandular) (infectional) (suppurative) (ulcerative) (vesicular)
- Cheilodynia
- Cheilosis (angular)
- Cyst (colloid) (mucous) (simple) (retention) › lip (gland)
- Deformity › lip (acquired) NEC
- Disease, diseased › Baelz's (cheilitis glandularis apostematosa)
- Disease, diseased › lip
- Disease, diseased › Puente's (simple glandular cheilitis)
- Disturbance (s) › keratinization NEC › lip
- Ectropion › lip (acquired)
- Fissure, fissured › lip
- Fistula (cutaneous) › lip
- Hypertrophy, hypertrophic › frenulum, frenum (tongue) › lip
- Hypertrophy, hypertrophic › lip
- Inflammation, inflamed, inflammatory (with exudation) › lip
- Intertrigo › labialis
- Lesion (s) (nontraumatic) › lip
- Myxadenitis labialis
- Paralysis, paralytic (complete) (incomplete) › lip
- Perlèche NEC
- Puente's disease (simple glandular cheilitis)
- Stomatitis (denture) (ulcerative) › angular
- Ulcer, ulcerated, ulcerating, ulceration, ulcerative › lip
Codes whose notes reference K13.0
MS-DRG v44.0 grouping
All DRGs →Inpatient MS-DRGs this diagnosis can group to, as the principal or a secondary diagnosis, depending on the rest of the claim.
MDC PRE · Pre-MDC
MDC 03 · Diseases and Disorders of the Ear, Nose, Mouth and Throat
ICD-9-CM equivalent
Converter →- 528.5Diseases of lipsexact
From the CMS 2018 General Equivalence Mappings (GEMs), the final GEMs release.
Code history
- 2016
- 2017
- 2018
- 2019
- 2020
- 2021
- 2022
- 2023
- 2024
- 2025
- 2026
- 2027
- FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
- No changes since FY2016.
Common questions about K13.0
Is K13.0 billable?
- Yes. K13.0 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can K13.0 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict K13.0 as a principal diagnosis.
Is K13.0 a CC or MCC?
- No. K13.0 is neither a CC nor an MCC under MS-DRG v44.0.
What DRG does K13.0 group to?
- K13.0 is used in the MS-DRG v44.0 logic for MS-DRG 011 (Tracheostomy for Face, Mouth and Neck Diagnoses or Laryngectomy with MCC), MS-DRG 012 (Tracheostomy for Face, Mouth and Neck Diagnoses or Laryngectomy with CC), MS-DRG 013 (Tracheostomy for Face, Mouth and Neck Diagnoses or Laryngectomy without CC/MCC), MS-DRG 157 (Dental and Oral Diseases with MCC), MS-DRG 158 (Dental and Oral Diseases with CC) and MS-DRG 159 (Dental and Oral Diseases without CC/MCC). Which one applies depends on whether it is the principal diagnosis and on the rest of the claim.
What is the ICD-9 code for K13.0?
- The CMS General Equivalence Mappings map K13.0 to ICD-9-CM 528.5.