Unsp open wound of left great toe w damage to nail, subs

This code signifies an open wound on the left great toe where the specific nature of the wound (e.g., laceration, puncture) is not documented, and there is associated damage to the toenail. This injury has been previously treated, and the patient is presenting for follow-up care, such as wound checks, dressing changes, or further management.

Apply this code when a patient presents for subsequent care of an open wound on their left great toe with nail damage, and the initial encounter code has already been submitted. This is appropriate when the documentation does not specify the type of open wound, but clearly indicates the left great toe and nail involvement.

• Ensure documentation explicitly states "left great toe" and "damage to nail" for accurate specificity.
• The "D" seventh character indicates a subsequent encounter, meaning the patient is receiving routine follow-up care during the healing phase.
• Do not use if the wound type (e.g., laceration, puncture) is specified; instead, select a more specific code from the S91.21-S91.24 series.