ICD-10-CM Code L98.5

Mucinosis of the skin

Version 2020 Billable Code

Valid for Submission

L98.5 is a billable code used to specify a medical diagnosis of mucinosis of the skin. The code is valid for the year 2020 for the submission of HIPAA-covered transactions. The ICD-10-CM code L98.5 might also be used to specify conditions or terms like acral persistent papular mucinosis, atypical lichen myxedematosus, cutaneous focal mucinosis, diffuse cutaneous mucinosis, discrete papular lichen myxedematosus, focal primary mucinosis of skin, etc

Short Description:Mucinosis of the skin
Long Description:Mucinosis of the skin

Tabular List of Diseases and Injuries

The Tabular List of Diseases and Injuries is a list of ICD-10 codes, organized "head to toe" into chapters and sections with guidance for inclusions, exclusions, descriptions and more. The following references are applicable to the code L98.5:

Inclusion Terms

Inclusion Terms
These terms are the conditions for which that code is to be used. The terms may be synonyms of the code title, or, in the case of "other specified" codes, the terms are a list of the various conditions assigned to that code. The inclusion terms are not necessarily exhaustive. Additional terms found only in the Alphabetic Index may also be assigned to a code.
  • Focal mucinosis
  • Lichen myxedematosus
  • Reticular erythematous mucinosis

Type 1 Excludes

Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.

Index to Diseases and Injuries

The Index to Diseases and Injuries is an alphabetical listing of medical terms, with each term mapped to one or more ICD-10 code(s). The following references for the code L98.5 are found in the index:


The following clinical terms are approximate synonyms or lay terms that might be used to identify the correct diagnosis code:

  • Acral persistent papular mucinosis
  • Atypical lichen myxedematosus
  • Cutaneous focal mucinosis
  • Diffuse cutaneous mucinosis
  • Discrete papular lichen myxedematosus
  • Focal primary mucinosis of skin
  • Follicular mucinosis type mycosis fungoides
  • Idiopathic benign cutaneous mucinosis
  • Lichen myxedematosus
  • Lupus erythematosus-associated papulonodular mucinosis
  • Mucinosis affecting skin
  • Nodular lichen myxedematosus
  • Papular mucinosis of infancy
  • Reticular erythematous mucinosis
  • Scleromyxedema
  • Secondary catabolic mucinosis of skin
  • Secondary catabolic mucinosis of skin
  • Secondary catabolic mucinosis of skin
  • Self-healing juvenile cutaneous mucinosis

Diagnostic Related Groups

The ICD-10 code L98.5 is grouped in the following groups for version MS-DRG V37.0 What are Diagnostic Related Groups?
The Diagnostic Related Groups (DRGs) are a patient classification scheme which provides a means of relating the type of patients a hospital treats. The DRGs divides all possible principal diagnoses into mutually exclusive principal diagnosis areas referred to as Major Diagnostic Categories (MDC).
applicable from 10/01/2019 through 09/30/2020.


Convert L98.5 to ICD-9

  • 701.8 - Skin hypertro/atroph NEC (Approximate Flag)

Code Classification

  • Diseases of the skin and subcutaneous tissue (L00–L99)
    • Other disorders of the skin and subcutaneous tissue (L80-L99)
      • Oth disorders of skin, subcu, not elsewhere classified (L98)

Code History

  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016
    (First year ICD-10-CM implemented into the HIPAA code set)
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020

Information for Patients

Skin Conditions

Your skin is your body's largest organ. It covers and protects your body. Your skin

  • Holds body fluids in, preventing dehydration
  • Keeps harmful microbes out, preventing infections
  • Helps you feel things like heat, cold, and pain
  • Keeps your body temperature even
  • Makes vitamin D when the sun shines on it

Anything that irritates, clogs, or inflames your skin can cause symptoms such as redness, swelling, burning, and itching. Allergies, irritants, your genetic makeup, and certain diseases and immune system problems can cause rashes, hives, and other skin conditions. Many skin problems, such as acne, also affect your appearance.

NIH: National Institute of Arthritis and Musculoskeletal and Skin Diseases

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