Is L74.510 a billable ICD-10-CM code?

Yes. L74.510 is a billable, specific ICD-10-CM code and is valid for submission on a claim.

Where does L74.510 sit in the tabular list?

Diseases of the skin and subcutaneous tissue (L00-L99), in the block Disorders of skin appendages (L60-L75).

L74.510

L74.510 — Primary focal hyperhidrosis, axilla

Billable / specific codeICD-10-CM

L74.510 is a billable, specific ICD-10-CM code for primary focal hyperhidrosis, axilla. It is valid for submission on a claim.

Excludes2 inherited from the categories above L74.510

Also inherited, and the opposite of Excludes1: these conditions are not part of L74.510, but a patient can have both, so you may code both.

Written on L74 — Eccrine sweat disorders

generalized hyperhidrosis (R61)

Risk adjustment

L74.510 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.

Medicare coverage

L74.510 is named in 18 Medicare coverage policies — 18 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.

A54095Billing and Coding: Nerve Conduction Studies and Electromyography
A56034Billing and Coding: Nerve Blockade for Treatment of Chronic Pain and Neuropathy
A56607Billing and Coding: Continuous Peripheral Nerve Blocks (CPNB)
A57123Billing and Coding: Nerve Conduction Studies and Electromyography

How L74.510 is indexed

Coders do not find codes by browsing the tabular list — they look them up in the alphabetic index, under the word the physician wrote. These are the index entries that lead here, so you can see which chart wordings map to L74.510.

Hyperhidrosis, hyperidrosis›focal›primary›axilla
Hyperhidrosis, hyperidrosis›localized›primary›axilla

Code history

L74.510 has not changed since FY2024 — no addition, revision or deletion across the three most recent ICD-10-CM releases.

Related codes at this level

Codes that share L74.51. If L74.510 is not quite right, the correct code is usually one of these.

Questions about L74.510

Is L74.510 a billable ICD-10-CM code?: Yes. L74.510 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does L74.510 sit in the tabular list?: Diseases of the skin and subcutaneous tissue (L00-L99), in the block Disorders of skin appendages (L60-L75).