K13.5
Billable codeOral submucous fibrosis
The ICD-10 code for oral submucous fibrosis is K13.5.
Clinical notes
Also known as
Alternate wording, synonyms, or specific conditions that fall under this code, listed to help confirm you've picked the right one.
- Submucous fibrosis of tongue
Documentation support
General coding-documentation guidance — not a substitute for payer-specific requirements or professional coding judgment.
- •As a general rule, code to the highest level of specificity supported by the documentation in the medical record.
Related codes in this category
- K13.0Diseases of lips
- K13.1Cheek and lip biting
- K13.2Leukoplakia and other disturbances of oral epithelium, including tonguenon-billable header
- K13.3Hairy leukoplakia
- K13.4Granuloma and granuloma-like lesions of oral mucosa
- K13.6Irritative hyperplasia of oral mucosa
- K13.7Other and unspecified lesions of oral mucosanon-billable header
- K13.5Oral submucous fibrosis
ICD-9-CM equivalent
Informational only — GEM mappings are approximate, not guaranteed one-to-one equivalents. Verify before use in billing.
- 5288
Associated MS-DRGs
K13.5 can serve as the principal diagnosis for these Medicare Severity Diagnosis-Related Groups.
Informational only — actual DRG assignment also depends on procedures, complications/comorbidities (CC/MCC), discharge status, and payer-specific rules not reflected here.
- DRG 011Tracheostomy for Face, Mouth and Neck Diagnoses or Laryngectomy with MCC
- DRG 012Tracheostomy for Face, Mouth and Neck Diagnoses or Laryngectomy with CC
- DRG 013Tracheostomy for Face, Mouth and Neck Diagnoses or Laryngectomy without CC/MCC
- DRG 157Dental and Oral Diseases with MCC
- DRG 158Dental and Oral Diseases with CC
- DRG 159Dental and Oral Diseases without CC/MCC