In simple words: This code describes a birth defect where two or more fingers are joined together.The fingers are fused, meaning they are stuck together,and this fusion may involve both the skin and the bones.

Q70.0 in the ICD-10-CM coding system represents fused fingers, specifically referring to complex syndactyly (fusion of fingers) with synostosis (abnormal fusion of bones).This code is used to classify congenital conditions where two or more fingers are joined together, involving both soft tissue and bony structures. The diagnosis requires a thorough examination to assess the extent and complexity of the fusion.

Example 1: A newborn infant presents with complete fusion of the second and third fingers on the right hand.The fusion involves both skin and bone. The diagnosis is documented after a physical exam.Q70.0 is the appropriate code., A child is diagnosed with complex syndactyly of the index and middle fingers of the left hand.Surgical intervention is planned to correct the anomaly. The pre-surgical diagnosis should be documented and coded accordingly., An adult patient presents with a history of congenital fused fingers (fourth and fifth fingers of the right hand), causing functional limitations. The patient is evaluated for surgical intervention to separate the fingers. The documentation should specify the affected fingers and the presence of synostosis to justify Q70.0.

Detailed clinical documentation is essential for accurate coding of Q70.0.The documentation should clearly specify:* The affected fingers (including hand laterality)* The extent of fusion (partial or complete)* The involvement of bones (synostosis)* Any associated anomalies or syndromic features* Relevant imaging studies (if performed)

** The appropriate seventh character should be added based on laterality (right or left) and the complexity of the syndactyly.Further sub-classification may be possible based on specific anatomical details or associated conditions.