L74.52 Secondary focal hyperhidrosis

Billable ICD-10-CM code, FY2026.

Applicable to

• Frey's syndrome

Applies from L74 Eccrine sweat disorders

Excludes2 (not included here)

• generalized hyperhidrosis (R61)

MS-DRG index

Defines the logic of DRG(s) 606-607 in MDC 09.

Approximate ICD-9-CM (GEMs)

• 705.22 Secondary focal hyperhidrosis

Code annotations containing back-references to L74.52

Back-references to L74.52

• Type 1 Excludes: R61 Generalized hyperhidrosis ("Frey's syndrome (L74.52)")

Back-references to L74.5

• Type 1 Excludes: R61 Generalized hyperhidrosis ("focal (primary) (secondary) hyperhidrosis (L74.5-)")
• Type 1 Excludes: R61 Generalized hyperhidrosis ("localized (primary) (secondary) hyperhidrosis (L74.5-)")

Back-references to L74

• Type 2 Excludes: T67 Effects of heat and light ("sweat disorder due to heat (L74-L75)")

Diagnosis Index entries for L74.52

• Frey's syndrome › hyperhidrosis
• Hyperhidrosis, hyperidrosis › focal › secondary
• Hyperhidrosis, hyperidrosis › localized › secondary
• Hyperhidrosis, hyperidrosis › secondary › focal
• Syndrome › Frey's › hyperhidrosis

Nearby codes

• L74.510 Primary focal hyperhidrosis, axilla
• L74.511 Primary focal hyperhidrosis, face
• L74.512 Primary focal hyperhidrosis, palms
• L74.513 Primary focal hyperhidrosis, soles
• L74.519 Primary focal hyperhidrosis, unspecified
• L74.52 Secondary focal hyperhidrosis (this code)
• L74.8 Other eccrine sweat disorders
• L74.9 Eccrine sweat disorder, unspecified