Commissural lip fistula

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Commissural lip fistula

ORPHA:141061Morphological anomaly

What it is

A rare otorhinolaryngological malformation characterized by a unilateral or bilateral fistula located at the corner of the mouth, where the vermillion border of the upper lip meets that of the lower lip. The lesion is lined by labial mucosa. It is potentially susceptible to infection.

Key facts

Classified as
Morphological anomaly

ICD-10 codes

Q38.0filed under a broader ICD-10 category — shared with 2 other rare diseases

ICD-10 has no distinct code for most rare diseases, so many are filed under the nearest available one. A shared code identifies the group, not this disease — the ORPHAcode above is what identifies it.

Cross-references

GARD 19939MONDO 0015381UMLS C5680634

Orphadata Science: Free access data from Orphanet. © INSERM 1999. Data version 2026-06-23. Available under CC BY 4.0. This is a reference, not medical advice.

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