13221 One unit of time
| 10000 | PREVENTION |
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| 13000 | PREVENTIVE SERVICES, OTHER |
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| 13200 | ORAL HYGIENE INSTRUCTION/PLAQUE CONTROL |
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| 13220 | Group Instruction - Excluding Audio-Visual Time |
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| 13221 | One unit of time | $74.0 | $74.0 |