2027 ICD-10-CM Diagnosis Code L53.9Erythematous condition, unspecified
ICD-10-CM Codes›L00–L99›L49-L54›L53
- Billable — Valid for Submission
- Not Chronic
L53.9 is a billable ICD-10-CM diagnosis code for erythematous condition, unspecified. 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. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Other specified inflammatory condition of skin.
Code Identity
Code Classification
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Acute erythema
- Application site erythema
- Application site rash
- Application site reaction
- Chronic erythema
- Eruption of female perineum
- Eruption of vulva
- Erythema
- Erythema at injection site
- Erythema of female perineum
- Erythema of periwound skin
- Erythema of skin
- Erythema of skin of nose
- Erythema of vagina
- Erythema of vulva
- Erythema over mastoid
- Erythroderma
- Erythroderma in infancy
- Erythroderma of unknown etiology
- Exanthematous disorder
- Finding of color of foot
- Finding of color of limb
- Foot red
- Idiopathic erythema
- Implant site erythema
- Injection site eruption
- Mucous membrane erythema
- Perifollicular erythema
- Periorbital erythema
- Persistent erythema of skin
- Rash of periwound skin
- Red extremities
Instructional NotesGuidance
Instructions from the official ICD-10-CM Tabular List that apply to L53.9: its own notes plus those printed at L53, block L49-L54, and Chapter 12. A note printed at a category, block or chapter applies to every code under it.
Applicable To
Conditions this code is used for: synonyms of the title or, for "other specified" codes, the conditions assigned to it. The list is not exhaustive.
- Erythema NOS
- Erythroderma NOS
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.-)
Source: CMS ICD-10-CM Tabular List. How to read instructional notes.
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
Erythroderma (secondary) See Also: Erythema; L53.9
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Clinical InformationClinical
Dermatitis, Exfoliative
the widespread involvement of the skin by a scaly, erythematous dermatitis occurring either as a secondary or reactive process to an underlying cutaneous disorder (e.g., atopic dermatitis, psoriasis, etc.), or as a primary or idiopathic disease. it is often associated with the loss of hair and nails, hyperkeratosis of the palms and soles, and pruritus. (from dorland, 27th ed)Erythema
redness of the skin produced by congestion of the capillaries. this condition may result from a variety of disease processes.
Patient EducationClinical
Skin Conditions
Your skin is your body's largest organ. It covers the entire outside of your body. There are many ways that your skin protects your body and helps keep you healthy. For example, it:
The full article covers:
- What does your skin do?
- What problems and conditions can affect your skin?
- How can I keep my skin healthy?
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Convert L53.9 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About L53.9Overview
What is the ICD-10 code for erythematous condition, unspecified?
The ICD-10-CM code for erythematous condition, unspecified is L53.9 (sometimes written as L539). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
Is L53.9 (Other erythematous conditions) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report erythematous condition, unspecified on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
What MS-DRG does L53.9 group to?
When erythematous condition, unspecified 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 L53.9 be reported with L59.0?
Not as a rule. The Excludes1 note at L53, which applies to L53.9, lists "erythema ab igne (L59.0)". 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 L53.9?
Under the General Equivalence Mappings, erythematous condition, unspecified converts to ICD-9-CM 695.9 (erythematous cond NOS). The mapping is a direct match.
