Other specified injuries of unspecified ankle, sequela

This code signifies a long-term complication or residual effect stemming from a previously sustained, unspecified injury to an unspecified ankle. It indicates that the initial acute injury has resolved, but the patient continues to experience related issues that are not further specified by a more precise sequela code.

Apply this code when documentation clearly indicates a sequela (late effect) of an ankle injury, but the specific nature of the original injury or the resulting complication is not detailed enough for a more specific code. This is appropriate for chronic pain, stiffness, or functional limitations attributed to an old ankle injury when no other specific sequela code (e.g., malunion, nonunion, arthritis) is applicable.

• Always attempt to identify a more specific sequela code if the documentation allows.
• Requires a seventh character "S" to indicate sequela, as this is a sequela code.
• Ensure the medical record explicitly links the current condition to a past ankle injury.