General Rating Formula For The Skin For DCs 7806, 7809, 7813- 7816, 7820-7822, and 7824:

At least one of the following

Characteristic lesions involving more than 40 percent of the entire body or more than 40 percent of exposed areas affected; or Constant or near-constant systemic therapy including, but not limited to,  corticosteroids, phototherapy, retinoids, biologics, photochemotherapy, psoralen with long-wave ultraviolet-A light (PUVA), or other immunosuppressive drugs required over the past 12-month period

At least one of the following

Characteristic lesions involving 20 to 40 percent of the entire body or 20 to 40 percent of exposed areas affected; or Systemic therapy including,  but not limited to, corticosteroids, phototherapy, retinoids, biologics, photochemotherapy, PUVA, or other immunosuppressive drugs required for a total duration of 6 weeks or more, but not constantly, over the past 12-month period At least one of the following

Characteristic lesions involving at least 5 percent, but less than 20 percent, of the entire body affected; orAt least 5 percent, but less than 20 percent, of exposed areas affected; or Intermittent systemic therapy including, but not limited to, corticosteroids, phototherapy, retinoids, biologics, photochemotherapy, PUVA, or other immunosuppressive drugs required for a total duration of less than 6 weeks over the past 12-month period No more than topical therapy required over the past 12