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  6. 2024 ICD-10-CM Code L56.4

2024 ICD-10-CM Diagnosis Code L56.4

Polymorphous light eruption

ICD-10-CM Code:
L56.4
ICD-10 Code for:
Polymorphous light eruption
Is Billable?
Yes - Valid for Submission
Chronic Condition Indicator: [1]
Not chronic
Code Navigator:

Code Classification

  • Diseases of the skin and subcutaneous tissue
    (L00–L99)
    • Radiation-related disorders of the skin and subcutaneous tissue
      (L55-L59)
      • Other acute skin changes due to ultraviolet radiation
        (L56)

L56.4 is a billable diagnosis code used to specify a medical diagnosis of polymorphous light eruption. The code is valid during the current fiscal year for the submission of HIPAA-covered transactions from October 01, 2023 through September 30, 2024.

Approximate Synonyms

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

  • Acne estivalis
  • Diffuse dermatitis
  • Diffuse inflammatory erythema
  • Hydroa vacciniforme
  • Juvenile spring eruption
  • Light - exacerbated acne
  • Polymorphous light eruption
  • Polymorphous light eruption
  • Polymorphous light eruption
  • Polymorphous light eruption
  • Polymorphous light eruption
  • Polymorphous light eruption
  • Polymorphous light eruption, diffuse erythematous type
  • Polymorphous light eruption, eczematous type
  • Polymorphous light eruption, papular type
  • Polymorphous light eruption, papulovesicular type
  • Polymorphous light eruption, plaque type

Clinical Classification

Clinical CategoryCCSR Category CodeInpatient Default CCSROutpatient Default CCSR
Allergic reactionsINJ031N - Not default inpatient assignment for principal diagnosis or first-listed diagnosis.N - Not default outpatient assignment for principal diagnosis or first-listed diagnosis.
Other specified and unspecified skin disordersSKN007Y - Yes, default inpatient assignment for principal diagnosis or first-listed diagnosis.Y - Yes, default outpatient assignment for principal diagnosis or first-listed diagnosis.

Clinical Information

  • Hydroa Vacciniforme

    a vesicular and bullous eruption having a tendency to recur in summer during childhood and commonly appearing on sun-exposed skin. the lesions are surrounded by an erythematous zone and resemble a vaccination. (from dorland, 27th ed)

  • Polymorphous Light Eruption

    a red, edematous rash that occurs on areas of the skin with recent exposure to sunlight.

  • Classic Hydroa Vacciniforme Lymphoproliferative Disorder|Classic HV LPD|Classic HV-LPD

    hydroa vacciniforme lymphoproliferative disorder characterized by the presence of self-limited papulovesicular skin lesions in sun-exposed areas. there is no involvement of internal organs. it has an indolent course and usually affects white individuals.

  • Hydroa Vacciniforme

    a rare skin disorder of unknown etiology affecting children. it is a photodermatitis, characterized by the formation of vesicles and scarring on sun exposed areas.

  • Hydroa Vacciniforme Lymphoproliferative Disorder|HV LPD|HV-LPD|HV-Like LPD|HV-Like Lymphoma|Hydroa Vacciniforme-Like Cutaneous T-Cell Lymphoma|Hydroa Vacciniforme-Like Lymphoma|Hydroa Vacciniforme-Like Lymphoma|Hydroa Vacciniforme-Like Lymphoproliferative Disorder|Hydroa vacciniforme-like lymphoma

    a rare, ebv-positive cutaneous t-cell lymphoproliferative disorder, composed of cd8 positive cytotoxic t-lymphocytes. it affects children, almost exclusively in latin america and asia. patients present with papulovesicular skin lesions, clinically resembling hydroa vacciniforme, in areas of sun-exposed skin.

  • Systemic Hydroa Vacciniforme Lymphoproliferative Disorder|Systemic HV LPD|Systemic HV-LPD

    hydroa vacciniforme lymphoproliferative disorder characterized by severe clinical course and associated with fever, lymph node involvement, and involvement of internal organs by ebv-positive t-cells and nk-cells. it usually affects asian and latin american individuals.

Index to Diseases and Injuries References

The following annotation back-references for this diagnosis code are found in the injuries and diseases index. The Index to Diseases and Injuries is an alphabetical listing of medical terms, with each term mapped to one or more ICD-10-CM code(s).

Convert L56.4 to ICD-9-CM

  • ICD-9-CM Code: 692.82 - Dermatitis oth radiation
    Approximate Flag - The approximate mapping means there is not an exact match between the ICD-10 and ICD-9 codes and the mapped code is not a precise representation of the original code.

Patient Education


Rashes

A rash is an area of irritated or swollen skin. Many rashes are itchy, red, painful, and irritated. Some rashes can also lead to blisters or patches of raw skin. Rashes are a symptom of many different medical problems. Other causes include irritating substances and allergies. Certain genes can make people more likely to get rashes.

Contact dermatitis is a common type of rash. It causes redness, itching, and sometimes small bumps. You get the rash where you have touched an irritant, such as a chemical, or something you are allergic to, like poison ivy.

Some rashes develop right away. Others form over several days. Although most rashes clear up fairly quickly, others are long-lasting and need long-term treatment.

Because rashes can be caused by many different things, it's important to figure out what kind you have before you treat it. If it is a bad rash, if it does not go away, or if you have other symptoms, you should see your health care provider. Treatments may include moisturizers, lotions, baths, cortisone creams that relieve swelling, and antihistamines, which relieve itching.


[Learn More in MedlinePlus]

Sun Exposure

Ultraviolet (UV) rays are an invisible form of radiation. They can pass through your skin and damage your skin cells. Sunburns are a sign of skin damage. Suntans aren't healthy, either. They appear after the sun's rays have already killed some cells and damaged others. UV rays can cause skin damage during any season or at any temperature. They can also cause eye problems, wrinkles, skin spots, and skin cancer.

To protect yourself :

  • Stay out of the sun when it is strongest (between 10 a.m. and 2 p.m.)
  • Use sunscreen with an SPF of 15 or higher
  • Wear protective clothing
  • Wear wraparound sunglasses that provide 100% UV ray protection
  • Avoid sunlamps and tanning beds

Check your skin regularly for changes in the size, shape, color, or feel of birthmarks, moles, and spots. Such changes are a sign of skin cancer.

Food and Drug Administration


[Learn More in MedlinePlus]

Code History

  • FY 2024 - No Change, effective from 10/1/2023 through 9/30/2024
  • FY 2023 - No Change, effective from 10/1/2022 through 9/30/2023
  • FY 2022 - No Change, effective from 10/1/2021 through 9/30/2022
  • FY 2021 - No Change, effective from 10/1/2020 through 9/30/2021
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016. This was the first year ICD-10-CM was implemented into the HIPAA code set.

Footnotes

[1] Not chronic - A diagnosis code that does not fit the criteria for chronic condition (duration, ongoing medical treatment, and limitations) is considered not chronic. Some codes designated as not chronic are acute conditions. Other diagnosis codes that indicate a possible chronic condition, but for which the duration of the illness is not specified in the code description (i.e., we do not know the condition has lasted 12 months or longer) also are considered not chronic.