New diagnosis codes will distinguish which foot and what type of wound it suffered.
Podiatry coders who were looking for more specificity in reporting open wounds of the ankle and foot have just over a year to wait. Under the ICD-10 diagnosis coding system, effective Oct. 1, 2015, you will pick a code based not only on whether the wound is complicated or has tendon involvement, but also based on which foot is involved, and what type of wound it is.
Open Wound of Ankle
ICD-9 groups open wounds of the knee, lower leg, and ankle together:
ICD-10 gives open wounds of the ankle its own series of codes (the knee and lower leg also get their own series), with specific codes for right and left ankle and type of wound (laceration, puncture, open bite).
For open wounds of the ankle without tendon involvement, the ICD-10 codes are:
Note: Wounds of muscles and tendons will have their own series of ICD-10 codes (S92-), which will specify which specific muscles are injured.
Open Wound of Foot
ICD-9 offers three codes for open wounds of the foot:
ICD-10 gets much more specific. Open wounds of the foot with tendon and muscle involvement will also be included in the S92- series. Open foot wounds without tendon involvement will be reported with:
7th character: At the end of the six-character ICD-10 codes above, you will add a character describing whether it is an initial encounter (A), subsequent encounter (D), or sequela (S). Example: An initial counter for a puncture wound with foreign body of the left foot would be coded S91.342A.
Toe wounds: ICD-10 codes describing wounds of the toes will be even more complex and detailed, with specific codes describing not only right or left foot, but great or lesser toe. Look for a discussion of those codes in a future issue of Podiatry Coding & Billing Alert.