42400 PERIODONTAL SURGERY, FLAP APPROACH
| 40000 | PERIODONTICS |
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| 42000 | PERIODONTAL SERVICES, SURGICAL |
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| 42400 | PERIODONTAL SURGERY, FLAP APPROACH | ||
| 42410 | Flap Approach, With Osteoplasty/Ostectomy |
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| 42420 | Flap Approach, With Curettage of Osseous Defect |
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| 42430 | Flap Approach, With Curettage of Osseous Defect and Osteoplasty |
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| 42440 | Flap Approach, Exploratory (for diagnosis) |