2024 ICD-10-CM Diagnosis Code L98.9

Disorder of the skin and subcutaneous tissue, unspecified

ICD-10-CM Code:
L98.9
ICD-10 Code for:
Disorder of the skin and subcutaneous tissue, unspecified
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)
    • Other disorders of the skin and subcutaneous tissue
      (L80-L99)
      • Other disorders of skin and subcutaneous tissue, not elsewhere classified
        (L98)

L98.9 is a billable diagnosis code used to specify a medical diagnosis of disorder of the skin and subcutaneous tissue, unspecified. The code is valid during the current fiscal year for the submission of HIPAA-covered transactions from October 01, 2023 through September 30, 2024.

Unspecified diagnosis codes like L98.9 are acceptable when clinical information is unknown or not available about a particular condition. Although a more specific code is preferable, unspecified codes should be used when such codes most accurately reflect what is known about a patient's condition. Specific diagnosis codes should not be used if not supported by the patient's medical record.

Approximate Synonyms

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

  • Acute skin disorder
  • Adverse cutaneous reaction to acupuncture
  • Adverse cutaneous reaction to carrier oil
  • Adverse cutaneous reaction to diagnostic procedure
  • Adverse cutaneous reaction to herbal medicine
  • Adverse cutaneous reaction to homeopathic medicine
  • Adverse cutaneous reaction to volatile oil
  • Adverse reaction to oil
  • Amputation-related dermatosis
  • Angular cheilitis
  • Animal-induced dermatosis
  • Anthozoa injury of skin
  • Arthropathy associated with dermatological disorder
  • Arthropod dermatosis
  • Change in skin lesion
  • Chemical-induced dermatological disorder
  • Chronic disease of skin
  • Circumscribed palmoplantar keratoderma
  • Cold-induced dermatosis
  • Complication of diagnostic procedure
  • Complication of hemodialysis
  • Congenital hypotrichia
  • Crohn's disease of parastomal skin
  • Crohn's disease of skin
  • Cutaneous disorder due to bovine papular stomatitis virus
  • Cutaneous inflammation due to cytotoxic therapy
  • Cutaneous lesion resulting from spinal dysraphism
  • Cutaneous reaction caused by bacterial toxin
  • Cutaneous reaction caused by Mollusk venom
  • Cutaneous reaction due to octopus bite
  • Cutaneous reaction to Cnidaria
  • Cutaneous reaction to Cnidaria
  • Cutaneous reaction to Cnidaria
  • Cutaneous reaction to Cubozoa
  • Cutaneous reaction to injected foreign material
  • Cutaneous reaction to Physalia
  • Cutaneous reaction to Scyphozoa
  • Dermatoses due to Crustacea
  • Dermatosis associated with biotin deficiency
  • Dermatosis caused by centipede
  • Dermatosis caused by coumarin
  • Dermatosis caused by food mite
  • Dermatosis caused by immunosuppressant
  • Dermatosis caused by zoonotic mite
  • Dermatosis due to algae
  • Dermatosis due to Arachnida
  • Dermatosis due to beetle
  • Dermatosis due to Coelenterata
  • Dermatosis due to Coelenterata
  • Dermatosis due to Coelenterata
  • Dermatosis due to Coelenterata
  • Dermatosis due to Echinoidea
  • Dermatosis due to harvest mite
  • Dermatosis due to Hymenoptera
  • Dermatosis due to insect mite
  • Dermatosis due to Insecta
  • Dermatosis due to lice
  • Dermatosis due to moth and/or butterfly
  • Dermatosis due to scorpion
  • Dermatosis due to spider
  • Dermatosis due to tick
  • Dermatosis in childhood
  • Dermatosis of anus
  • Dermatosis of external ear
  • Dermatosis of external genitalia
  • Dermatosis of infancy
  • Dermatosis of lower limb due to disorder of leg veins
  • Dermatosis of perianal region caused by Enterobius vermicularis
  • Dermatosis of perineum
  • Dermatosis of scalp
  • Dermatosis resulting from anticoagulant therapy
  • Dermatosis resulting from arterial insufficiency
  • Dermatosis resulting from cytotoxic therapy
  • Dermatosis resulting from intravascular thrombosis
  • Dermatosis resulting from small vessel insufficiency
  • Dermatosis resulting from vascular insufficiency
  • Dermatosis resulting from vascular insufficiency
  • Dermatosis secondary to peripheral nerve disorder
  • Disease due to Parapoxvirus
  • Disease due to superfamily Oxyuroidea
  • Disease of skin and subcutaneous tissue complicating pregnancy, childbirth and/or puerperium
  • Disorder due to bovine papular stomatitis virus
  • Disorder of integument
  • Disorder of nail due to dermatosis
  • Disorder of perianal skin
  • Disorder of scalp
  • Disorder of skin
  • Disorder of skin and/or subcutaneous tissue
  • Disorder of skin AND/OR subcutaneous tissue of flank
  • Disorder of skin AND/OR subcutaneous tissue of head
  • Disorder of skin AND/OR subcutaneous tissue of neck
  • Disorder of skin AND/OR subcutaneous tissue of trunk
  • Disorder of skin appendage
  • Disorder of skin caused by epidermal growth factor receptor inhibitor
  • Disorder of skin co-occurrent with human immunodeficiency virus infection
  • Disorder of skin due to tattoo ink
  • Disorder of skin following procedure
  • Disorder of skin of head
  • Disorder of skin of lower limb
  • Disorder of skin of neck
  • Disorder of skin of trunk
  • Disorder of skin of upper limb
  • Disorder of subcutaneous tissue
  • Disorders of skin induced by physical agents
  • Drug-induced dermatosis
  • Exogenous hand eczema
  • Finger grip mark
  • Focal acral hyperkeratosis
  • Friction dermatosis
  • Friction eczema
  • Friction palmar eczema
  • Heat-induced dermatosis
  • Herbal medicine adverse reaction
  • Hereditary disorder of the integument
  • Hereditary hypotrichosis with recurrent skin vesicles syndrome
  • Homeopathic medicine adverse reaction
  • Infection by Enterobius vermicularis
  • Infestation by Trombicula
  • Inflammatory dermatosis
  • Lepromatous skin complications
  • Lesion of face
  • Lesion of mucosa
  • Lesion of neck
  • Lesion of scalp
  • Lesion of skin and/or skin-associated mucous membrane
  • Lesion of skin of face
  • Lesion of skin of foot
  • Marfan's syndrome
  • Marfan's syndrome affecting skin
  • Menstrual cycle related dermatosis
  • Nail dystrophy associated with dermatological disease
  • Nakajo-Nishimura syndrome
  • Neurotrophic damage to skin
  • Occupational cold-induced dermatosis
  • Occupational heat-induced dermatosis
  • Occupational skin disease
  • Occupational toxicoderma
  • Pinch mark
  • PLACK syndrome
  • Pseudoscleroderma due to amyloid light-chain amyloidosis
  • Punctate palmoplantar keratoderma
  • Radiation recall reaction due to cytotoxic therapy
  • Scleroderma-like secondary cutaneous sclerosis
  • Self-inflicted skin lesions
  • Sequelae of leprosy
  • Site-specific disorder of skin
  • Skin and subcutaneous tissue complication following chemexfoliation of skin
  • Skin and subcutaneous tissue complication following insertion of filling material under skin
  • Skin and subcutaneous tissue damage caused by snake venom
  • Skin damage resulting from acquired nerve disorder
  • Skin disease attributable to corticosteroid therapy
  • Skin disease due to arsenic
  • Skin disorder due to phototherapy
  • Skin disorder of genitalia and perineum
  • Skin disorder of umbilicus
  • Skin disorder treatment changed
  • Skin disorder treatment started
  • Skin lesion
  • Skin lesion associated with hemodialysis
  • Skin lesion due to drug overdose
  • Skin lesion due to intravenous drug abuse
  • Skin lesion in drug addict
  • Skin mark
  • Skin peeling disorder
  • Skin plaque
  • Skin reaction to vesicant poison
  • Subcutaneous fat disorder
  • Toxicoderma
  • Toxicoderma
  • Toxicoderma
  • Ulcer
  • Ultraviolet recall reaction due to cytotoxic therapy
  • Vitamin A-responsive dermatosis

Clinical Classification

Clinical Information

  • Folliculin|BHD|BHD Skin Lesion Fibrofolliculoma Protein|Birt-Hogg-Dube Syndrome Protein|FLCN

    folliculin protein (579 aa, ~64 kda) is encoded by the human flcn gene. this protein is purported to play a role in tumor suppresion, but an exact function has yet to be identified. mutations and truncations in the protein have been implicated in the pathogenesis of fibrofolliculoma formation, birt-hogg-dube syndrome, and colorectal tumorigenesis.
  • Localized Skin Lesion

    a pathologic process that affects the skin and is confined to a specific area.
  • Skin Lesion

    a localized pathological or traumatic structural change, damage, deformity, or discontinuity of skin.
  • Skin Lesion Surgery

    a surgical procedure to remove a skin lesion and a margin around the area.

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 L98.9 to ICD-9-CM

  • ICD-9-CM Code: 709.9 - Skin disorder NOS
    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


Skin Conditions

What does your skin do?

Your skin is your body's largest organ. It covers the entire outside of your body. There are many ways that your skin protects your body and helps keep you healthy. For example, it:

  • Holds body fluids in, which helps prevent you from getting dehydrated
  • Keeps out harmful germs, which helps prevent infections
  • Helps you feel things like heat, cold, and pain
  • Helps control your body temperature
  • Makes vitamin D when the sun shines on it
  • Shields your body against heat and light

What problems and conditions can affect your skin?

There are many different problems and conditions which can affect your skin. Some of them can cause uncomfortable symptoms, such as itching, burning, redness, and rashes. They might also affect your appearance. Some of the more common skin conditions include:

  • Acne, which causes pimples when hair follicles under your skin get clogged up
  • Burns
  • Cuts and scrapes
  • Dandruff, flaking of the skin on your scalp (the top of your head)
  • Eczema (atopic dermatitis), which causes inflammation, redness, and irritation of the skin
  • Hives, which are red and sometimes itchy bumps on your skin
  • Insect bites
  • Psoriasis, which causes itchy, scaly red patches
  • Skin cancer
  • Skin infections

How can I keep my skin healthy?

Since your skin protects your body in many ways, it's important to try to keep your skin healthy. For example, you can:

  • Wear the right protective equipment, like gloves, long sleeves, knee and elbow pads, or helmets to protect against cuts, bumps and scrapes.
  • If you do get a cut or scrape, clean it right away with soap and warm water. Put on a bandage to protect it while it heals.
  • When you are spending time outdoors, wear long sleeves and pants and use insect repellant to prevent insect bites.
  • Prevent sunburn by covering up and using sunscreen when outdoors.
  • Wash your hands often with soap and water.
  • When you take a shower or bath, use warm (not hot) water. Use mild cleansers and wash gently (don't scrub).
  • Use moisturizers, like lotions, creams, or ointments, to prevent dry skin.

NIH: National Institute of Arthritis and Musculoskeletal and Skin Diseases


[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.