2020 ICD-10-CM Diagnosis Code L50

Urticaria

    2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
  • L50 should not be used for reimbursement purposes as there are multiple codes below it that contain a greater level of detail.
  • The 2020 edition of ICD-10-CM L50 became effective on October 1, 2019.
  • This is the American ICD-10-CM version of L50 - other international versions of ICD-10 L50 may differ.
Type 1 Excludes
Type 1 Excludes Help
A type 1 excludes note is a pure excludes. It means "not coded here". A type 1 excludes note indicates that the code excluded should never be used at the same time as L50. A type 1 excludes note is for used for when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
  • allergic contact dermatitis (
    ICD-10-CM Diagnosis Code L23
    • L23 Allergic contact dermatitis
      • L23.0 Allergic contact dermatitis due to metals
      • L23.1 Allergic contact dermatitis due to adhesives
      • L23.2 Allergic contact dermatitis due to cosmetics
      • L23.3 Allergic contact dermatitis due to drugs in c...
      • L23.4 Allergic contact dermatitis due to dyes
      • L23.5 Allergic contact dermatitis due to other chem...
      • L23.6 Allergic contact dermatitis due to food in co...
      • L23.7 Allergic contact dermatitis due to plants, ex...
      • L23.8 Allergic contact dermatitis due to other agen...
        • L23.81 Allergic contact dermatitis due to animal (ca...
        • L23.89 Allergic contact dermatitis due to other agen...
      • L23.9 Allergic contact dermatitis, unspecified caus...
    L23.-
    )
  • angioneurotic edema (
    ICD-10-CM Diagnosis Code T78.3

    Angioneurotic edema

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    Applicable To
    • Allergic angioedema
    • Giant urticaria
    • Quincke's edema
    Type 1 Excludes
    T78.3
    )
  • giant urticaria (
    ICD-10-CM Diagnosis Code T78.3

    Angioneurotic edema

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    Applicable To
    • Allergic angioedema
    • Giant urticaria
    • Quincke's edema
    Type 1 Excludes
    T78.3
    )
  • hereditary angio-edema (
    ICD-10-CM Diagnosis Code D84.1

    Defects in the complement system

      2016 2017 2018 2019 2020 Billable/Specific Code
    Applicable To
    • C1 esterase inhibitor [C1-INH] deficiency
    D84.1
    )
  • Quincke's edema (
    ICD-10-CM Diagnosis Code T78.3

    Angioneurotic edema

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    Applicable To
    • Allergic angioedema
    • Giant urticaria
    • Quincke's edema
    Type 1 Excludes
    T78.3
    )
  • serum urticaria (
    ICD-10-CM Diagnosis Code T80.6

    Other serum reactions

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    Applicable To
    • Intoxication by serum
    • Protein sickness
    • Serum rash
    • Serum sickness
    • Serum urticaria
    Type 2 Excludes
    T80.6-
    )
  • solar urticaria (
    ICD-10-CM Diagnosis Code L56.3

    Solar urticaria

      2016 2017 2018 2019 2020 Billable/Specific Code
    L56.3
    )
  • urticaria neonatorum (
    ICD-10-CM Diagnosis Code P83.8

    Other specified conditions of integument specific to newborn

      2016 2017 2018 - Converted to Parent Code 2019 2020 Non-Billable/Non-Specific Code
    P83.8
    )
  • urticaria papulosa (
    ICD-10-CM Diagnosis Code L28.2

    Other prurigo

      2016 2017 2018 2019 2020 Billable/Specific Code
    Applicable To
    • Prurigo NOS
    • Prurigo Hebra
    • Prurigo mitis
    • Urticaria papulosa
    L28.2
    )
  • urticaria pigmentosa (
    ICD-10-CM Diagnosis Code D47.01

    Cutaneous mastocytosis

      2018 - New Code 2019 2020 Billable/Specific Code
    Applicable To
    • Diffuse cutaneous mastocytosis
    • Maculopapular cutaneous mastocytosis
    • Solitary mastocytoma
    • Telangiectasia macularis eruptiva perstans
    • Urticaria pigmentosa
    Type 1 Excludes
    • congenital (diffuse) (maculopapular) cutaneous mastocytosis (Q82.2)
    • congenital urticaria pigmentosa (Q82.2)
    • extracutaneous mastocytoma (D47.09)
    D47.01
    )
The following code(s) above L50 contain annotation back-references
Annotation Back-References
In this context, annotation back-references refer to codes that contain:
  • Applicable To annotations, or
  • Code Also annotations, or
  • Code First annotations, or
  • Excludes1 annotations, or
  • Excludes2 annotations, or
  • Includes annotations, or
  • Note annotations, or
  • Use Additional annotations
that may be applicable to L50:
  • L00-L99
    2020 ICD-10-CM Range L00-L99

    Diseases of the skin and subcutaneous tissue

    Type 2 Excludes
    • certain conditions originating in the perinatal period (P04-P96)
    • certain infectious and parasitic diseases (A00-B99)
    • complications of pregnancy, childbirth and the puerperium (O00-O9A)
    • congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
    • endocrine, nutritional and metabolic diseases (E00-E88)
    • lipomelanotic reticulosis (I89.8)
    • neoplasms (C00-D49)
    • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
    • systemic connective tissue disorders (M30-M36)
    • viral warts (B07.-)
    Diseases of the skin and subcutaneous tissue
  • L49-L54
    2020 ICD-10-CM Range L49-L54

    Urticaria and erythema

    Type 1 Excludes
    Urticaria and erythema
Clinical Information
  • A disorder characterized by an itchy skin eruption characterized by wheals with pale interiors and well-defined red margins.
  • A raised, erythematous papule or cutaneous plaque, usually representing short-lived dermal edema
  • A vascular reaction of the skin characterized by erythema and wheal formation due to localized increase of vascular permeability. The causative mechanism may be allergy, infection, or stress.
  • An itchy skin eruption characterized by weals with pale interiors and well-defined red margins; usually the result of an allergic response to insect bites or food or drugs.
  • An itchy skin eruption characterized by wheals with pale interiors and well-defined red margins; usually the result of an allergic response to insect bites or food or drugs.
  • Hives are red and sometimes itchy bumps on your skin. An allergic reaction to a drug or food usually causes them. Allergic reactions cause your body to release chemicals that can make your skin swell up in hives. People who have other allergies are more likely to get hives than other people. Other causes include infections and stress.hives are very common. They usually go away on their own, but if you have a serious case, you might need medicine or a shot. In rare cases, allergic reactions can cause a dangerous swelling in your airways, making it hard to breathe - which is a medical emergency.
  • Itchy, raised red areas on the skin. Urticaria are caused by a reaction to certain foods, drugs, infections, or emotional stress.
  • Urticaria.
  • Usually transient vascular reaction involving the upper dermis, representing local edema caused by dilation and increased permeability of the capilliaries and the development of wheals.
Code History
  • 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
  • 2017 (effective 10/1/2016): No change
  • 2018 (effective 10/1/2017): No change
  • 2019 (effective 10/1/2018): No change
  • 2020 (effective 10/1/2019): No change
Code annotations containing back-references to L50:
  • Code First: F54
    ICD-10-CM Diagnosis Code F54

    Psychological and behavioral factors associated with disorders or diseases classified elsewhere

      2016 2017 2018 2019 2020 Billable/Specific Code Manifestation Code
    Applicable To
    • Psychological factors affecting physical conditions
    Code First
    • the associated physical disorder, such as:
    • asthma (J45.-)
    • dermatitis (L23-L25)
    • gastric ulcer (K25.-)
    • mucous colitis (K58.-)
    • ulcerative colitis (K51.-)
    • urticaria (L50.-)
    Type 2 Excludes
    • tension-type headache (G44.2)
  • Type 1 Excludes: T78.3
    , L95
    ICD-10-CM Diagnosis Code T78.3

    Angioneurotic edema

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    Applicable To
    • Allergic angioedema
    • Giant urticaria
    • Quincke's edema
    Type 1 Excludes
    ICD-10-CM Diagnosis Code L95

    Vasculitis limited to skin, not elsewhere classified

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    Type 1 Excludes
    • angioma serpiginosum (L81.7)
    • Henoch(-Schönlein) purpura (D69.0)
    • hypersensitivity angiitis (M31.0)
    • lupus panniculitis (L93.2)
    • panniculitis NOS (M79.3)
    • panniculitis of neck and back (M54.0-)
    • polyarteritis nodosa (M30.0)
    • relapsing panniculitis (M35.6)
    • rheumatoid vasculitis (M05.2)
    • serum sickness (T80.6-)
    • urticaria (L50.-)
    • Wegener's granulomatosis (M31.3-)
  • Type 2 Excludes: L27
    ICD-10-CM Diagnosis Code L27

    Dermatitis due to substances taken internally

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    Type 1 Excludes
    Type 2 Excludes
    • adverse food reaction, except dermatitis (T78.0-T78.1)
    • contact dermatitis (L23-L25)
    • drug photoallergic response (L56.1)
    • drug phototoxic response (L56.0)
    • urticaria (L50.-)
ICD-10-CM Codes Adjacent To L50
L49.0 Exfoliation due to erythematous condition involving less than 10 percent of body surface
L49.1 Exfoliation due to erythematous condition involving 10-19 percent of body surface
L49.2 Exfoliation due to erythematous condition involving 20-29 percent of body surface
L49.3 Exfoliation due to erythematous condition involving 30-39 percent of body surface
L49.4 Exfoliation due to erythematous condition involving 40-49 percent of body surface
L49.5 Exfoliation due to erythematous condition involving 50-59 percent of body surface
L49.6 Exfoliation due to erythematous condition involving 60-69 percent of body surface
L49.7 Exfoliation due to erythematous condition involving 70-79 percent of body surface
L49.8 Exfoliation due to erythematous condition involving 80-89 percent of body surface
L49.9 Exfoliation due to erythematous condition involving 90 or more percent of body surface
L50 Urticaria
L50.0 Allergic urticaria
L50.1 Idiopathic urticaria
L50.2 Urticaria due to cold and heat
L50.3 Dermatographic urticaria
L50.4 Vibratory urticaria
L50.5 Cholinergic urticaria
L50.6 Contact urticaria
L50.8 Other urticaria
L50.9 Urticaria, unspecified
L51 Erythema multiforme

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.