Non-Billable / Non-Specific Code
ICD-10-CM L27 is the diagnosis code for Dermatitis due to substances taken internally. This code falls under the section "Dermatitis and eczema" within Chapter 12 â Diseases of the skin and subcutaneous tissue (L00-L99). It is a non-billable/non-specific ICD-10-CM code that should not be used for reimbursement. A more specific sub-code is required for billing. Medical coders and healthcare providers use this code to document and classify diagnoses in electronic health records, insurance claims, and clinical databases.
The following conditions should never be coded at the same time as L27. They are mutually exclusive:
The following conditions are not included in L27. If the patient has both, code each condition separately:
Understanding where L27 sits in the ICD-10-CM classification helps ensure proper coding:
No, L27 is a non-billable/non-specific code. You should use a more specific sub-code for billing and reimbursement.
L27 is the ICD-10-CM diagnosis code for "Dermatitis due to substances taken internally". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.
L27 is located in Section L20-L30 â "Dermatitis and eczema" within Chapter 12 of the ICD-10-CM Tabular List.
L27 has 5 sub-code(s) that provide more specific detail: L27.0, L27.1, L27.2, L27.8, L27.9.
Use L27 when the patients documented diagnosis matches "Dermatitis due to substances taken internally" and the clinical documentation supports this level of specificity. Always verify with the latest ICD-10-CM guidelines and payer requirements.
The ICD-10-CM code for Dermatitis due to substances taken internally is L27.
No, L27 is non-billable. Use a more specific sub-code for primary diagnosis billing.
L27 is in Chapter 12 of the ICD-10-CM Tabular List.
Type 1 Excludes for L27 include: allergy NOS (T78.40).
Yes, L27 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.