2027 ICD-10-CM Diagnosis Code L27.2Dermatitis due to ingested food
ICD-10-CM Codes›L00–L99›L20-L30›L27
- Billable — Valid for Submission
- Not Chronic
L27.2 is a billable ICD-10-CM diagnosis code for dermatitis due to ingested food. 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 dermatitis caused by ingested food. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Allergic reactions and Other specified inflammatory condition of skin.
Code Identity
Code Classification
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Dermatitis caused by ingested food
- Dermatitis caused by substance taken via oral route
Instructional NotesGuidance
Instructions from the official ICD-10-CM Tabular List that apply to L27.2: its own notes plus those printed at L27, 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.-)
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 L27.2, its category, or a range that includes it.
Excludes1 3
These codes carry an Excludes1 note naming L27.2: they are not reported together with it, unless the two conditions are unrelated.
Excludes2 7
These codes carry an Excludes2 note naming L27.2: its condition is not part of those codes, and both may be reported when the patient has both.
- L23.6 Allergic contact dermatitis due to food in contact with the skindermatitis due to ingested food (L27.2)
- L24.6 Irritant contact dermatitis due to food in contact with skindermatitis due to ingested food (L27.2)
- L25.4 Unspecified contact dermatitis due to food in contact with skindermatitis due to ingested food (L27.2)
- T78.1 Other adverse food reactions, not elsewhere classifieddermatitis due to ingested food (L27.2)
- L23 Allergic contact dermatitisdermatitis due to substances taken internally (L27.-) names L27.-, which includes this code
- L24 Irritant contact dermatitisdermatitis due to substances taken internally (L27.-) names L27.-, which includes this code
- L25 Unspecified contact dermatitisdermatitis due to ingested substances (L27.-) names L27.-, which includes this code
Code First 1
These codes say to code first a condition named in the note, and L27.2 is one of the conditions named.
- Block T36-T50 Poisoning by, adverse effect of and underdosing of drugs, medicaments and biological substancesdermatitis due to substances taken internally (L27.-) names L27.-, which includes this code
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
Allergy, allergic (reaction) (to) T78.40
milk protein See Also: Allergy, food; Z91.0110
dermatitis L27.2
cereal (ingested) L27.2
coffee (ingested) L27.2
fish (ingested) L27.2
flour (ingested) L27.2
food (ingested) L27.2
fruit (ingested) L27.2
ingestion, ingested substance L27.9
food L27.2
food L27.2
meat (ingested) L27.2
milk (ingested) L27.2
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Patient EducationClinical
Food Allergy
A food allergy is an abnormal immune system reaction to certain foods. Your immune system normally protects you from germs. But if you have a food allergy, your immune system mistakenly reacts to certain foods as if they were harmful. This reaction is usually mild. But in some cases, it can be serious or even life-threatening.
The full article covers:
- What is a food allergy?
- Who is more likely to develop a food allergy?
- What are the symptoms of food allergies?
- How are food allergies diagnosed?
- What are the treatments for food allergies?
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Convert L27.2 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About L27.2Overview
What is the ICD-10 code for dermatitis due to ingested food?
The ICD-10-CM code for dermatitis due to ingested food is L27.2 (sometimes written as L272). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
Is L27.2 (Dermatitis due to substances taken internally) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report dermatitis due to ingested food on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
What MS-DRG does L27.2 group to?
When dermatitis due to ingested food 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 L27.2 be reported with T78.40?
Not as a rule. The Excludes1 note at L27, which applies to L27.2, 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).
What is the ICD-9 equivalent of L27.2?
Under the General Equivalence Mappings, dermatitis due to ingested food converts to ICD-9-CM 693.1 (dermat d/t food ingest). The mapping is a direct match.
