2027 ICD-10-CM Diagnosis Code L23.3Allergic contact dermatitis due to drugs in contact with skin
ICD-10-CM Codes›L00–L99›L20-L30›L23
- Billable — Valid for Submission
- Not Chronic
L23.3 is a billable ICD-10-CM diagnosis code for allergic contact dermatitis due to drugs in contact with skin. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 606 through 607. Coders also document this condition as allergic contact dermatitis caused by antiseptic and/or disinfectant. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Allergic reactions and Contact dermatitis.
Code Identity
Code Classification
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Allergic contact dermatitis caused by antiseptic and/or disinfectant
- Allergic contact dermatitis caused by drug in contact with skin
- Delayed photoallergic dermatitis
- Occupational allergic contact dermatitis caused by antiseptic and/or disinfectant
- Photoallergic contact dermatitis due to non-steroidal anti-inflammatory drug
- Photoallergic dermatitis
Instructional NotesGuidance
Instructions from the official ICD-10-CM Tabular List that apply to L23.3: its own notes plus those printed at L23, block L20-L30, and Chapter 12. A note printed at a category, block or chapter applies to every code under it.
Excludes1
Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.
Excludes2
Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.
- 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.-)
Use Additional Code
Add a second code, after this one, to fully describe the condition.
Notes
General instructions on how these codes are used.
- In this block the terms dermatitis and eczema are used synonymously and interchangeably.
Source: CMS ICD-10-CM Tabular List. How to read instructional notes.
Referenced in Other NotesGuidance
Instructional notes printed at other codes that name L23.3, its category, or a range that includes it.
Excludes1 4
These codes carry an Excludes1 note naming L23.3: they are not reported together with it, unless the two conditions are unrelated.
Excludes2 5
These codes carry an Excludes2 note naming L23.3: its condition is not part of those codes, and both may be reported when the patient has both.
- T81 Complications of procedures, not elsewhere classifieddermatitis due to drugs and medicaments (L23.3, L24.4, L25.1, L27.0-L27.1)
- T88 Other complications of surgical and medical care, not elsewhere classifieddermatitis due to drugs and medicaments (L23.3, L24.4, L25.1, L27.0-L27.1)
- L24 Irritant contact dermatitisallergic contact dermatitis (L23.-) names L23.-, which includes this code
- L27 Dermatitis due to substances taken internally
- L30 Other and unspecified dermatitis
Code First 2
These codes say to code first a condition named in the note, and L23.3 is one of the conditions named.
- F54 Psychological and behavioral factors associated with disorders or diseases classified elsewhere
- Block T36-T50 Poisoning by, adverse effect of and underdosing of drugs, medicaments and biological substances
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Clinical InformationClinical
Dermatitis, Allergic Contact
a contact dermatitis due to allergic sensitization to various substances. these substances subsequently produce inflammatory reactions in the skin of those who have acquired hypersensitivity to them as a result of prior exposure.
Patient EducationClinical
Allergy
An allergy is a reaction by your immune system to something that does not bother most other people. People who have allergies often are sensitive to more than one thing. Substances that often cause reactions are:
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Convert L23.3 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About L23.3Overview
What is the ICD-10 code for allergic contact dermatitis due to drugs in contact with skin?
The ICD-10-CM code for allergic contact dermatitis due to drugs in contact with skin is L23.3 (sometimes written as L233). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
Is L23.3 (Allergic contact dermatitis) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report allergic contact dermatitis due to drugs in contact with skin on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
What MS-DRG does L23.3 group to?
When allergic contact dermatitis due to drugs in contact with skin is the principal diagnosis on an inpatient stay, it groups to MS-DRG 607, 606, with relative weights from 0.8772 to 1.5721 depending on complications. Higher weights mean higher Medicare reimbursement.
Can L23.3 be reported with T78.40?
Not as a rule. The Excludes1 note at L23, which applies to L23.3, lists "allergy NOS (T78.40)". An Excludes1 note means the excluded code is never reported together with this one; the only exception is when the two conditions are unrelated to each other (Official Guidelines, Section I.A.12.a).
