Primary focal hyperhidrosis, face

This code signifies excessive, spontaneous sweating specifically and primarily affecting the face, without an underlying medical condition causing it. It represents a chronic, localized overactivity of the sweat glands in the facial region, leading to significant discomfort and social impact.

Apply this code when documentation clearly indicates a diagnosis of primary (idiopathic) hyperhidrosis localized to the face. This diagnosis is typically made after ruling out secondary causes of hyperhidrosis through patient history, physical examination, and potentially laboratory tests.

• Ensure the documentation specifies "primary" or "idiopathic" to differentiate from secondary hyperhidrosis.
• Verify that the affected anatomical site is explicitly stated as the "face" to avoid miscoding other focal hyperhidrosis sites.
• Do not use this code if the hyperhidrosis is generalized or due to an underlying medical condition; instead, code the underlying condition and the appropriate secondary hyperhidrosis code.