ICD10BillableValid for clinical use

ICD-10 Code L74.52: Secondary focal hyperhidrosis

L74.52 is a billable ICD-10 diagnosis code used to classify Secondary focal hyperhidrosis in medical records and claims. You may see this code in hospital records, discharge summaries, insurance claims, encounter documentation, referrals, or other healthcare billing and coding records. ICD-10 codes are diagnosis classification codes used in healthcare records, reporting, coding workflows, and billing support. This code sits within the broader ICD-10 area for Diseases of the skin and subcutaneous tissue (L00-L99).

Reviewed by HealthAssure Clinical TeamUpdated 21 May 2026

What is this code?

ICD-10 codes are diagnosis classification codes used in healthcare records, reporting, coding workflows, and billing support. This code sits within the broader ICD-10 area for Diseases of the skin and subcutaneous tissue (L00-L99).

When is it used?

  • May be used when a clinician documents secondary focal hyperhidrosis in a patient's medical record.
  • May appear in hospital records, claims, referrals, and clinical documentation.
  • This code can be used as a clinically usable diagnosis entry in standardized coding workflows.

What it does not mean

  • A code alone does not explain severity, treatment plan, or outcome.
  • A medical code should not be treated as a substitute for a doctor's diagnosis or advice.

Code hierarchy

chapter
12Diseases of the skin and subcutaneous tissue (L00-L99)
block
L60-L75Disorders of skin appendages
category
L74Eccrine sweat disorders
category
L74.5Focal hyperhidrosis
currentL74.5

Official coding notes

Inclusion terms
  • Frey's syndrome

Where you may see this code

You may see this code in hospital records, discharge summaries, insurance claims, encounter documentation, referrals, or other healthcare billing and coding records.

Related specialists

Dermatologist

Coding guidelines

Common synonyms

Secondary focal hyperhidrosis

Frequently asked questions

Code details

CodeL74.52
SystemICD10
Display nameSecondary focal hyperhidrosis
ChapterDiseases of the skin and subcutaneous tissue (L00-L99)
BlockDisorders of skin appendages

Flags

BillableYes
Valid clinical useYes

Source

SourceICD-10
Version2026-annual
Releaseannual
Year2026

Index terms

Matched terms
Frey's syndromeHyperhidrosis, hyperidrosisHyperhidrosis, hyperidrosisHyperhidrosis, hyperidrosisSyndrome

About this content

This page is prepared by HealthAssure's clinical team using official coding standards from ICD-10. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.

ICD-10 Code L74.52 for Secondary focal hyperhidrosis | HealthAssure