Strain extn/abdr musc/fasc/tend of r thm at forarm lv, init

This diagnosis describes an injury to the muscles, fascia, or tendons responsible for extending or moving the right thumb away from the hand, specifically at the forearm level. This is a soft tissue injury, indicating overstretching or tearing of these structures.

Apply this code when documenting an acute strain of the right thumb's extensor or abductor mechanisms originating in the forearm. This is appropriate for initial evaluations following a new injury, such as from repetitive motion, sudden forceful movements, or direct trauma to the forearm affecting these thumb structures.

• Ensure documentation specifies "right thumb" and "forearm level" to support this precise code.
• Confirm the encounter is the "initial encounter" for this specific injury. Subsequent encounters will require a different seventh character.
• Distinguish from sprains (ligamentous injury) or strains of other thumb muscles or at different anatomical levels.