The correct codes are 13121, 13122 and 11042 for the given condition.
Complex repairs deal with wounds which are much deeper than the ones requiring simple repair. Complex repairs need debridement or notable revisions, retention sutures, etc. in addition to the layered closure of the affected portion.
The code 13121 indicates complex repair in the scalp, arms as well as legs; 2.6 cm to 7.5 cm for the initial 7.5 cm wound.
The code 13122 is added to define the wound (greater than 7.5cm) requiring complex repair in the same region for the extra 1.0 cm i.e. 7.5 cm + 1.0 cm = 8.5 cm.
The code 11042 is used for reporting debridement of contaminated skin and subcutaneous tissue.
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