Urticaria and erythema - L49-L54
Excludes1: It indicates that the conditions described by two codes cannot occur together in the same patient. These codes are mutually exclusive.
Type 1 Excludes:
- Lyme disease (A69.2-)
- rosacea (L71.-)
These ranges represents Categories of Urticaria and erythema. The "L49-L54" signifies that these are the diseases within this broad section.