| K06.0 | Gingival recession | NON-BILLABLE CODE |
| K06.01 | Gingival recession, localized | NON-BILLABLE CODE |
| K06.010 | Localized gingival recession, unspecified | BILLABLE CODE |
| K06.011 | Localized gingival recession, minimal | BILLABLE CODE |
| K06.012 | Localized gingival recession, moderate | BILLABLE CODE |
| K06.013 | Localized gingival recession, severe | BILLABLE CODE |
| K06.02 | Gingival recession, generalized | NON-BILLABLE CODE |
| K06.020 | Generalized gingival recession, unspecified | BILLABLE CODE |
| K06.021 | Generalized gingival recession, minimal | BILLABLE CODE |
| K06.022 | Generalized gingival recession, moderate | BILLABLE CODE |
| K06.023 | Generalized gingival recession, severe | BILLABLE CODE |
| K06.1 | Gingival enlargement | BILLABLE CODE |
| K06.2 | Gingival and edentulous alveolar ridge lesions associated with trauma | BILLABLE CODE |
| K06.3 | Horizontal alveolar bone loss | BILLABLE CODE |
| K06.8 | Other specified disorders of gingiva and edentulous alveolar ridge | BILLABLE CODE |
| K06.9 | Disorder of gingiva and edentulous alveolar ridge, unspecified | BILLABLE CODE |
