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ICD-10-CM Code B35.1
Tinea unguium

Billable Code
Billable codes are sufficient justification for admission to an acute care hospital when used a principal diagnosis.
| ICD-10 from 2011 - 2016

B35.1 is a billable ICD code used to specify a diagnosis of tinea unguium. A 'billable code' is detailed enough to be used to specify a medical diagnosis.

The ICD code B351 is used to code Onychomycosis

Onychomycosis (also known as dermatophytic onychomycosis or tinea unguium ) is a fungal infection of the nail. It is the most common disease of the nails and constitutes about half of all nail abnormalities.

Specialty: Infectious Disease
MeSH Code: D014009
ICD 9 Code: 110.1

A toenail affected by onychomycosis

Source: Wikipedia

Coding Notes for B35.1 Info for medical coders on how to properly use this ICD-10 code

Inclusion Terms:
Inclusion Terms
Inclusion Terms are a list of concepts for which a specific code is used. The list of Inclusion Terms is useful for determining the correct code in some cases, but the list is not necessarily exhaustive.
Dermatophytic onychia
Dermatophytosis of nail
Ringworm of nails

MS-DRG Mapping

  • DRG Group #606-607 - Minor skin disorders with MCC.
  • DRG Group #606-607 - Minor skin disorders without MCC.

Related Concepts SNOMET-CT

  • Onychomycosis due to Trichophyton rubrum (disorder)

ICD-10-CM Alphabetical Index References for 'B35.1 - Tinea unguium'

The ICD-10-CM Alphabetical Index links the below-listed medical terms to the ICD code B35.1. Click on any term below to browse the alphabetical index.

Onychomycosis(finger) (toe) (B35.1)


Dermatophytosis of nail (exact match)

This is the official exact match mapping between ICD9 and ICD10, as provided by the General Equivalency mapping crosswalk. This means that in all cases where the ICD9 code 110.1 was previously used, B35.1 is the appropriate modern ICD10 code.

Parent Code: B35 - Dermatophytosis

** This Document Provided By ICD.Codes **
Source: http://icd.codes/icd10cm/B351