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ICD-10-CM Code L51.9
Erythema multiforme, unspecified

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

L51.9 is a billable ICD code used to specify a diagnosis of erythema multiforme, unspecified. A 'billable code' is detailed enough to be used to specify a medical diagnosis.

The ICD code L51 is used to code Erythema

Erythema (from the Greek erythros, meaning red) is redness of the skin or mucous membranes, caused by hyperemia of superficial capillaries. It occurs with any skin injury, infection, or inflammation. Examples of erythema not associated with pathology include nervous blushes.

Specialty: Dermatology
MeSH Code: D004890
ICD 9 Code: 695

Characteristic "bull's eye" rash (erythema migrans) of early Lyme disease

Source: Wikipedia

Coding Notes for L51.9 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.
Erythema iris
Erythema multiforme major NOS
Erythema multiforme minor NOS
Herpes iris

MS-DRG Mapping

  • DRG Group #595-596 - Major skin disorders with MCC.
  • DRG Group #595-596 - Major skin disorders without MCC.

Related Concepts SNOMET-CT

  • Erythema multiforme-induced ulceration of lips (disorder)
  • Erythema iris (disorder)

Coding Advice SNOMET-CT

  • Consider additional code to identify specific condition or disease

ICD-10-CM Alphabetical Index References for 'L51.9 - Erythema multiforme, unspecified'

The ICD-10-CM Alphabetical Index links the below-listed medical terms to the ICD code L51.9. Click on any term below to browse the alphabetical index.


Erythema multiforme, unspecified (approximate match)

This is the official approximate match mapping between ICD9 and ICD10, as provided by the General Equivalency mapping crosswalk. This means that while there is no exact mapping between this ICD10 code L51.9 and a single ICD9 code, 695.10 is an approximate match for comparison and conversion purposes.

Parent Code: L51 - Erythema multiforme

** This Document Provided By ICD.Codes **
Source: http://icd.codes/icd10cm/L519