L23.9
BillableAllergic contact dermatitis, unspecified cause
Allergic contact dermatitis, unspecified cause
Coding Notes
Inclusion Terms
Alternative clinical terms for this condition
- Allergic contact eczema NOS
Excludes 1
Codes that cannot be used together with this code (mutual exclusion)
Excludes 2
Conditions not included here, but the patient may have both
- 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.-)
- chronic (childhood) granulomatous disease (D71)
- dermatitis gangrenosa (L08.0)
- dermatitis herpetiformis (L13.0)
- dry skin dermatitis (L85.3)
- factitial dermatitis (L98.1)
- perioral dermatitis (L71.0)
- radiation-related disorders of the skin and subcutaneous tissue (L55-L59)
- stasis dermatitis (I87.2)
- dermatitis due to substances taken internally (L27.-)
- dermatitis of eyelid (H01.1-)
- diaper dermatitis (L22)
- eczema of external ear (H60.5-)
- irritant contact dermatitis (L24.-)
Also Known As / Clinical Terms
SNOMED CT
- Contact urticaria19364004
- Allergic vulvitis22775002
- Chronic contact dermatitis51221005
- Circumscribed neurodermatitis53891004
- LSC - Lichen simplex chronicus53891004
- Lichen simplex53891004
- Lichen simplex chronicus53891004
- Lichenoid dermatitis53891004
- Local neurodermatitis53891004
- Neurodermatitis circumscripta53891004
- ACD - Allergic contact dermatitis238575004
- Allergic contact dermatitis238575004
- Industrial dermatitis238578002
- Occupational allergic contact dermatitis238578002
- Lichenoid allergic contact dermatitis238672005
- Perianal dermatitis275448003
- Allergic contact dermatitis of perianal skin402252004
- Allergic contact dermatitis of hands402254003
- Allergic eczema of hands402254003
- Allergic contact dermatitis of lower leg402255002
- Allergic contact dermatitis of male genitalia402256001
- Allergic contact dermatitis of female genitalia402257005
- Allergic contact urticaria402304007
- Lichenoid allergic contact reaction402576006
- Allergic contact dermatitis of external auditory canal419957005
- Otitis externa due to contact allergy419957005
- Allergic disorder of skin422290000
- Skin allergy422290000
- Allergic sensitisation609327009
- Allergic sensitization609327009
- Contact dermatitis of female genitalia717725000
- Contact dermatitis of external ear724635009
- Allergic contact sensitisation of skin and skin-associated mucous membrane724870009
- Allergic contact sensitization of skin and skin-associated mucous membrane724870009
- Exacerbation of constitutional dermatitis due to occupation724871008
- Contact dermatitis of male genitalia1144940005
- Protein contact dermatitis1172686000
- Systemic contact dermatitis1251364007
- Contact dermatitis of scalp1251372009
- Contact dermatitis of skin of scalp1251372009
- Contact dermatitis of lower leg1251373004
- Contact dermatitis of skin of lower leg1251373004
- Contact dermatitis of perianal skin1251375006
- Contact dermatitis of skin of perianal area1251375006
- Contact dermatitis of foot1251379000
- Exacerbation of constitutional dermatitis due to occupational exposure to contact allergen1251380002
- Disseminated allergic contact urticaria1251424007
- Localised allergic contact urticaria1251425008
- Localized allergic contact urticaria1251425008
- Allergic contact dermatitis of scalp1251426009
- Allergic contact dermatitis of face1251427000
- Allergic contact dermatitis of skin of face1251427000
- Allergic contact dermatitis of foot1251428005
- Allergic contact dermatitis of skin of foot1251428005
- Occupational allergic contact sensitisation1251444001
- Occupational allergic contact sensitisation of skin and skin-associated mucous membrane1251444001
- Occupational allergic contact sensitization1251444001
- Occupational allergic contact sensitization of skin and skin-associated mucous membrane1251444001
- Allergic contact dermatitis of neck1251559009
- Contact dermatitis of neck1251625001
- Contact dermatitis of skin of neck1251625001
- Contact dermatitis of left hand46351000087109
- Contact dermatitis of skin of left hand46351000087109
- Contact dermatitis of right hand46361000087107
- Contact dermatitis of skin of right hand46361000087107
UMLS
- ACD - Allergic contact dermatitisC0162820
- Allergic Contact DermatitidesC0162820
- Allergic Contact DermatitisC0162820
- Allergic Eczematous DermatitidesC0162820
- Allergic Eczematous DermatitisC0162820
- Allergic contact dermatitisC0162820
- Allergic contact dermatitis (disorder)C0162820
- Allergic contact dermatitis, unspecified causeC0162820
- Contact Dermatitides, AllergicC0162820
- Contact Dermatitis, AllergicC0162820
- Dermatitides, Allergic ContactC0162820
- Dermatitides, Allergic EczematousC0162820
- Dermatitis, Allergic ContactC0162820
- Dermatitis, Allergic EczematousC0162820
- Dermatitis, Contact, AllergicC0162820
- Eczematous Dermatitides, AllergicC0162820
- Eczematous Dermatitis, AllergicC0162820
- allergic contact dermatitisC0162820
- contact allergic dermatitisC0162820
- dermatitis contact allergicC0162820
- Allergic contact eczema NOSC1393798
Frequently Asked Questions
What is ICD-10 code L23.9?
ICD-10-CM code L23.9 represents "Allergic contact dermatitis, unspecified cause". It is a billable/specific code that can be used on a claim.
Is L23.9 a billable code?
Yes, L23.9 is a billable/specific ICD-10-CM code and can be used to indicate a diagnosis on a medical claim.
What chapter is L23.9 in?
L23.9 is in Chapter 12: Diseases of the Skin and Subcutaneous Tissue (codes L00-L99).
What codes cannot be used with L23.9?
L23.9 has Excludes1 notes indicating codes that cannot be used together with it, including: allergy NOS (T78.40); contact dermatitis NOS (L25.9); dermatitis NOS (L30.9).
What SNOMED CT codes does L23.9 map to?
L23.9 maps to 40 SNOMED CT concepts: 238575004, 419957005, 1251427000, 402257005, 1251428005, and 35 more. SNOMED CT is a clinical terminology used in electronic health records.
What are the UMLS CUIs for L23.9?
L23.9 is linked to 2 UMLS Concept Unique Identifiers: C0162820, C1393798. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.
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Includes SNOMED Clinical Terms® (SNOMED CT®) used by permission of SNOMED International. Includes content from the UMLS Metathesaurus, courtesy of the U.S. National Library of Medicine.