2021 ICD-10-CM Code L99
Other disorders of skin and subcutaneous tissue in diseases classified elsewhere
Valid for Submission
L99 is a billable diagnosis code used to specify a medical diagnosis of other disorders of skin and subcutaneous tissue in diseases classified elsewhere. The code L99 is valid during the fiscal year 2021 from October 01, 2020 through September 30, 2021 for the submission of HIPAA-covered transactions.
The ICD-10-CM code L99 might also be used to specify conditions or terms like acute chagas' disease, african trypanosomiasis affecting skin, amyloidosis cutis dyschromia, amyloidosis limited to skin, chagas' exanthem , cutaneous complication of rheumatoid disease, etc.
| ICD-10: | L99 |
| Short Description: | Oth disorders of skin, subcu in diseases classd elswhr |
| Long Description: | Other disorders of skin and subcutaneous tissue in diseases classified elsewhere |
Code Classification
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 L99:
Code First
Code FirstCertain conditions have both an underlying etiology and multiple body system manifestations due to the underlying etiology. For such conditions, the ICD-10-CM has a coding convention that requires the underlying condition be sequenced first followed by the manifestation. Wherever such a combination exists, there is a "use additional code" note at the etiology code, and a "code first" note at the manifestation code. These instructional notes indicate the proper sequencing order of the codes, etiology followed by manifestation.
- underlying disease, such as:
- amyloidosis E85
Type 1 Excludes
Type 1 ExcludesA 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.
Code Edits
The Medicare Code Editor (MCE) detects and reports errors in the coding of claims data. The following ICD-10 Code Edits are applicable to this code:
- Manifestation diagnoses - Manifestation codes describe the manifestation of an underlying disease, not the disease itself, and therefore should not be used as a principal diagnosis.
Approximate Synonyms
The following clinical terms are approximate synonyms or lay terms that might be used to identify the correct diagnosis code:
- Acute Chagas' disease
- African trypanosomiasis affecting skin
- Amyloidosis cutis dyschromia
- Amyloidosis limited to skin
- Chagas' exanthem
- Cutaneous complication of rheumatoid disease
- Cutaneous complication of rheumatoid disease
- Cutaneous complication of systemic sclerosis
- Dermatosis resulting from vascular insufficiency
- Disorder of lymphatics affecting the skin
- Metabolic and nutritional disorders affecting skin
- Non-specific cutaneous reaction in Hodgkin's disease
- Primary localized cutaneous amyloidosis
- Pseudoscleroderma due to rheumatoid disease
- Rheumatoid neutrophilic dermatitis
- Secondary xanthomatous infiltration of the skin
- Skin disorder associated with AIDS
- Skin involvement in bacterial endocarditis
- Skin lesion in drug addict
- Small vessel thrombosis of skin
- Spinal cord defect affecting skin
- Systemic disease affecting skin
- Trypanosomiasis affecting skin
- Trypanosomiasis affecting skin
Diagnostic Related Groups - MS-DRG Mapping
The ICD-10 code L99 is grouped in the following groups for version MS-DRG V38.0 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 10/01/2020 through 09/30/2021.
Convert L99 to ICD-9 Code
The General Equivalency Mapping (GEM) crosswalk indicates an approximate mapping between the ICD-10 code L99 its ICD-9 equivalent. The approximate mapping means there is not an exact match between the ICD-10 code and the ICD-9 code and the mapped code is not a precise representation of the original code.
Information for Patients
Skin Conditions
Also called: Cutaneous disorders, Dermatologic disorders
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
- Acrodermatitis (Medical Encyclopedia)
- Cryotherapy (Medical Encyclopedia)
- Cutaneous skin tags (Medical Encyclopedia)
- Dry skin -- self-care (Medical Encyclopedia)
- Erythema multiforme (Medical Encyclopedia)
- Granuloma annulare (Medical Encyclopedia)
- Keratosis pilaris (Medical Encyclopedia)
- Lichen planus (Medical Encyclopedia)
- Milia (Medical Encyclopedia)
- Sebaceous cyst (Medical Encyclopedia)
- Seborrheic keratosis (Medical Encyclopedia)
- Skin lesion removal (Medical Encyclopedia)
- Skin lesion removal-aftercare (Medical Encyclopedia)
- Stasis dermatitis and ulcers (Medical Encyclopedia)
[Learn More]
Code History
- 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 (First year ICD-10-CM implemented into the HIPAA code set)