Inj extn musc/fasc/tend at forearm level, unsp arm, sequela

This code signifies a long-term complication or late effect resulting from a previous injury to an extensor muscle, fascia, or tendon in the forearm. The specific extensor structure and the exact nature of the injury are not specified, nor is the affected arm. This typically involves residual pain, weakness, limited range of motion, or other chronic issues stemming from an old injury.

Apply this code when documenting a patient presenting with a chronic condition directly attributable to a past injury of an unspecified extensor muscle, fascia, or tendon in the forearm. This is appropriate for follow-up encounters where the acute injury has resolved, but ongoing problems persist. Examples include chronic pain, stiffness, or functional impairment after a healed forearm extensor strain or tear.

• Always use this code as a secondary diagnosis, following the code for the specific sequela (e.g., chronic pain, muscle weakness).
• Ensure documentation clearly links the current condition to a previous extensor forearm injury.
• Avoid using this code for acute injuries; it is strictly for sequelae.