ICD-10-CM Code for Perioral Dermatitis
The ICD-10-CM code for perioral dermatitis is L71.0.
Understanding the Code
Perioral dermatitis is classified under the rosacea category in ICD-10-CM coding, specifically as L71.0. This code represents perioral dermatitis as a distinct clinical entity characterized by chronic papulopustular facial dermatitis typically occurring around the mouth, though it can extend to perinasal and periocular areas 1.
Clinical Context
While the provided evidence focuses primarily on contact dermatitis coding and validation studies, perioral dermatitis is a separate diagnostic entity that:
- Presents as erythematous papules and pustules around the mouth with characteristic sparing of the vermillion border
- Does not respond to standard acne therapy and requires different treatment strategies 2
- Is associated with significant quality of life impacts despite being frequently encountered in clinical practice 1
Coding Considerations
Key points for accurate coding:
- Use L71.0 specifically - Do not confuse with contact dermatitis codes (L20.x series) or eczema codes (L30.9), even though perioral dermatitis may clinically resemble these conditions
- Avoid misclassification - Perioral dermatitis should not be coded as allergic contact dermatitis (L20.x) or irritant contact dermatitis, as these represent different pathophysiologic processes
- Document clinical features - The diagnosis should be supported by clinical documentation showing the characteristic perioral distribution and papulopustular morphology
Common Coding Pitfalls
Do not use:
- L20.82, L20.84, L20.89, or L20.9 (atopic dermatitis codes)
- L30.9 (dermatitis, unspecified)
- L23.x or L24.x (allergic or irritant contact dermatitis codes)
These codes represent different conditions with different pathophysiology, despite potential clinical overlap in presentation.