S56 is a non-billable/non-specific diagnosis code from the 2026 ICD-10-CM used to classify the following condition: Injury of muscle, fascia and tendon at forearm level.
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Any associated open wound (S51.-)
The appropriate 7th character is to be added to each code from category S56
A: initial encounter
D: subsequent encounter
S: sequela
Injury of flexor muscle, fascia and tendon of thumb at forearm level
Injury of flexor muscle, fascia and tendon of other and unspecified finger at forearm level
Injury of other flexor muscle, fascia and tendon at forearm level
Injury of extensor or abductor muscles, fascia and tendons of thumb at forearm level
Injury of extensor muscle, fascia and tendon of other and unspecified finger at forearm level
Injury of other extensor muscle, fascia and tendon at forearm level
Injury of other muscles, fascia and tendons at forearm level
Injury of unspecified muscles, fascia and tendons at forearm level
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New code