2027 ICD-10-CM Diagnosis Code L59.0Erythema ab igne [dermatitis ab igne]
ICD-10-CM Codes›L00–L99›L55-L59›L59
- Billable — Valid for Submission
- Not Chronic
L59.0 is a billable ICD-10-CM diagnosis code for erythema ab igne [dermatitis ab igne]. 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 erythema ab igne. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Contact dermatitis.
Code Identity
Code Classification
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Erythema ab igne
- Heat-induced dermatosis
Instructional NotesGuidance
Instructions from the official ICD-10-CM Tabular List that apply to L59.0: its own notes plus those printed at Chapter 12. A note printed at a category, block or chapter applies to every code under it.
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.-)
Source: CMS ICD-10-CM Tabular List. How to read instructional notes.
Referenced in Other NotesGuidance
Instructional notes printed at other codes that name L59.0, its category, or a range that includes it.
Excludes1 5
These codes carry an Excludes1 note naming L59.0: they are not reported together with it, unless the two conditions are unrelated.
Excludes2 7
These codes carry an Excludes2 note naming L59.0: its condition is not part of those codes, and both may be reported when the patient has both.
- Block T20-T32erythema [dermatitis] ab igne (L59.0)
- Block L20-L30 Dermatitis and eczema
- L23 Allergic contact dermatitis
- L24 Irritant contact dermatitis
- L25 Unspecified contact dermatitis
- Block T20-T32
- X32 Exposure to sunlight
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
ab igne L59.0
calorica L59.0
combustionis L59.0
weather or places L59.0
heat L59.0
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Patient EducationClinical
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Convert L59.0 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About L59.0Overview
What is the ICD-10 code for erythema ab igne [dermatitis ab igne]?
The ICD-10-CM code for erythema ab igne [dermatitis ab igne] is L59.0 (sometimes written as L590). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
Is L59.0 a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report erythema ab igne [dermatitis ab igne] on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
What MS-DRG does L59.0 group to?
When erythema ab igne [dermatitis ab igne] 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.
What is the ICD-9 equivalent of L59.0?
Under the General Equivalence Mappings, erythema ab igne [dermatitis ab igne] converts to ICD-9-CM 692.82 (dermatitis oth radiation). The mapping is approximate, so confirm the match fits the documentation.
