| L23 | Allergic contact dermatitis | NON-BILLABLE CODE |
| L23.0 | Allergic contact dermatitis due to metals | BILLABLE CODE |
| L23.1 | Allergic contact dermatitis due to adhesives | BILLABLE CODE |
| L23.2 | Allergic contact dermatitis due to cosmetics | BILLABLE CODE |
| L23.3 | Allergic contact dermatitis due to drugs in contact with skin | BILLABLE CODE |
| L23.4 | Allergic contact dermatitis due to dyes | BILLABLE CODE |
| L23.5 | Allergic contact dermatitis due to other chemical products | BILLABLE CODE |
| L23.6 | Allergic contact dermatitis due to food in contact with the skin | BILLABLE CODE |
| L23.8 | Allergic contact dermatitis due to other agents | NON-BILLABLE CODE |
| L23.81 | Allergic contact dermatitis due to animal (cat) (dog) dander | BILLABLE CODE |
| L23.89 | Allergic contact dermatitis due to other agents | BILLABLE CODE |
| L23.9 | Allergic contact dermatitis, unspecified cause | BILLABLE CODE |
