K13.5 ICD-10-CA code: Oral submucous fibrosis
K13.5 is the ICD-10-CA code for “Oral submucous fibrosis” in CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026.
Official description
K13.5Oral submucous fibrosis
ICD-10-CA · Canada · Also written K135
Index terms
Entries in CIHI’s alphabetical index that lead to K13.5. Searching the index by the condition the note names is how coders reach this code.
- Fibrosis, fibrotic, tongue, submucous
- Fibrosis, fibrotic, submucous (oral) (tongue)
Notes for K13.5
As CIHI prints them, with any note K13.5 takes from the headings above it.
Includes
- Submucous fibrosis of tongue
- Epithelial disturbances of tongueFrom K13 Other diseases of lip and oral mucosa
Excludes
Conditions classified elsewhere.
- Certain disorders of gingiva and edentulous alveolar ridge (K05-K06)cysts of oral region (K09.-)diseases of tongue (K14.-)stomatitis and related lesions (K12.-)From K13 Other diseases of lip and oral mucosa
- Certain:• conditions originating in the perinatal period (P00-P96)• infectious and parasitic diseases (A00-B99)complications of pregnancy, childbirth and the puerperium (O00-O99)congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)endocrine, nutritional and metabolic diseases (E00-E90)injury, poisoning and certain other consequences of external causes (S00-T98)neoplasms (C00-D48)symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99)From Chapter 11: Diseases of the digestive system (K00-K93)
Where K13.5 sits
- 1ChapterChapter 11: Diseases of the digestive system (K00-K93)
- 2Block K00-K14Diseases of oral cavity, salivary glands and jaws
- 3Category K13Other diseases of lip and oral mucosa
- 4Valid code K13.5Oral submucous fibrosis
Source and release
- Data release
- ICD-10-CA · FY 2026–2027
- Effective date
- Apr 1, 2026
- Publisher
- CIHI
This page is built from the ICD-10-CA catalog that Vero Codes reads when it suggests codes: Canadian Institute for Health Information’s FY 2026–2027 release, imported from the publisher’s file and checked against it. The description, notes and structured data come from the same record.
Frequently asked questions
What does ICD-10-CA code K13.5 mean?
K13.5 is the ICD-10-CA code for “Oral submucous fibrosis” in CIHI’s ICD-10-CA FY 2026–2027 release.
Where is K13.5 in ICD-10-CA?
K13.5 sits under K13 Other diseases of lip and oral mucosa, within K00-K14 Diseases of oral cavity, salivary glands and jaws, within Chapter 11: Diseases of the digestive system (K00-K93).
What coding notes apply to K13.5?
ICD-10-CA lists Includes, Excludes notes for K13.5, including those from the headings it sits under. They are listed on this page with where each one comes from.
Which ICD-10-CA release does this page use?
It uses CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026 to Mar 31, 2027. It is a reference: confirm the code against the current list and the payer’s rules before you submit it.