Syndactyly type 6

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Syndactyly type 6

ORPHA:295012Morphological anomaly

Also called Mitten hand · Syndactyly, mitten type · Unilateral syndactyly of digits 2-5

What it is

A rare non-syndromic syndactyly characterized by unilateral fusion of 2nd to 5th fingers, amalgamation of distal phalanges in a knot-like structure, and fusion of the 2nd and 3rd toe. Some individuals present only with webbing between the 2nd and 3rd toes, without involvement of fingers.

Key facts

Classified as
Morphological anomaly

ICD-10 codes

Q70.1filed under a broader ICD-10 category — shared with 4 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

MONDO 0017460UMLS C4706525

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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