NOTE: 1. Functional areas includes the following anatomical areas: Head, neck, axillae, elbow, wrist, hand, groin, perineum, hip, knee, ankle, foot and includes coverage of exposed vital structures (bone, tendon, major vessel, nerve) 2. Flaps (HSCs 98.53,98.5A,98.51A,98.51B) for functional areas are designated by FNCAR modifier, add 50% to total benefit. 3. Flap size 5-10 cms or double Z-plasty designated by 2ZPL modifier, add 25% to benefit. 4. Flap size greater than 10 cms or triple Z-plasty designated by 3ZPL modifier, add 50% to benefit. 5. Composite tissue resection (includes bone) designated by CMPRSC modifier, add 25% to benefit. 6. Only one modifier (CMPRSC, FNCAR, 2ZPL, 3ZPL) may be claimed per flap.