Inj unsp blood vessel at wrist and hand of unsp arm, sequela

This code indicates a long-term complication or late effect resulting from an injury to a blood vessel in the wrist or hand, where the specific type of vessel is known but not explicitly detailed, and the affected arm is not specified. This could involve conditions such as chronic pain, nerve damage, or impaired circulation that developed after the initial vascular trauma.

This code is appropriate when documenting a sequela of a past, unspecified blood vessel injury to the wrist or hand, and the laterality of the arm is not recorded. It should be used for follow-up encounters addressing residual problems directly attributable to the original vascular damage, after the acute phase of the injury has passed.

• Always assign a "S" (sequela) seventh character for conditions that are late effects of an injury.
• Ensure documentation clearly links the current condition as a direct result of a previous wrist/hand blood vessel injury.
• Avoid using this code for acute injuries; instead, use the appropriate acute injury code with the correct seventh character.