I’m looking for coding input regarding the operative note below. My thoughts are 15734/50, 49565, 49568.

PROCEDURE PERFORMED:
1. Component separation, retrorectal, 25 x 16 Marlex mesh repair of complex ventral incisional hernia.
2. Debridement of devitalized tissue and removal of mesh.
3. Flap advancement, right and left, bilateral, with component separation. The surface area was 30 x 25 bilaterally.

FINDINGS AND PROCEDURE:
With the patient under satisfactory endotracheal general anesthesia, the anterior abdomen was draped and prepped in the usual fashion. Patient identification and the proposed procedure were confirmed by the operative team. The patient received the usual prophylactic antibiotic and anticoagulation regimens. A longitudinal incision between xiphoid process to the pubis was performed. This hernia extended from the pubis up to above the umbilicus, where the recurrent hernia was present and with a significant amount of diastasis recti was present to the xiphoid. The midline incision was mobilized down to the subcutaneous fascia. The external layer of the rectus was exposed for approximately 15 cm on each side to the lateral margins of both rectus muscles superiorly and inferiorly to the space of Retzius. The devitalized hernia sac, including mesh, was removed and excised. No significant adhesions noted anteriorly. The opening in the peritoneum was closed with running sutures of 2-0 Vicryl and the posterior rectus fascia with the peritoneum closed with running sutures of #1 PDS. Anterior to this, a large Marlex mesh repair in the retrorectal position that measured 26 x 16 cm was placed in position and anchored circumferentially at 2 cm intervals with transfascial sutures of #1 Nurolon. This was done in interrupted fashion. The anterior rectus fascia was approximated without significant difficulty with interrupted near and far sutures of #0 Nurolon. Nurolon was used to anchor the mesh. Two 19 Blake drains were left in the subcutaneous space and exteriorized through separate incisions and secured to the skin with 3-0 nylon sutures. The subcutaneous tissue was closed with running sutures of #2-0 Vicryl and the skin with staples. Dressings were applied. The patient was awakened and transferred to the recovery room in stable condition.

Any and all input is appreciated!