2027 ICD-10-CM Diagnosis Code L12.2Chronic bullous disease of childhood
ICD-10-CM Codes›L00–L99›L10-L14›L12
- Billable — Valid for Submission
- Chronic Condition
L12.2 is a billable ICD-10-CM diagnosis code for chronic bullous disease of childhood. 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. The code is restricted by the Medicare Code Editor to pediatric patients (age 0 through 17). In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Other specified inflammatory condition of skin.
L12.2 does not risk-adjust for Medicare Advantage under the CMS-HCC V28 model. It still risk-adjusts in the RxHCC Part D (V08) category 314 for payment year 2027.
Code Identity
Code Classification
Code EditsBilling
Medicare Code Editor checks that affect claim validity for L12.2.
Medicare Risk Adjustment (HCC)Billing
L12.2 does not risk-adjust for Medicare Advantage under the CMS-HCC V28 model, but it maps to payment categories in the other CMS models shown below.
Source: CMS Payment Year 2027 risk adjustment mappings and model software. Weights are relative factors, not dollar amounts; a beneficiary's total RAF also includes demographics and interactions. Browse all CMS-HCC categories.
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Bullous eruption of childhood
- Bullous pemphigoid
- Childhood bullous pemphigoid
- Chronic bullous dermatosis of childhood
- Chronic localized pemphigoid
- Conjunctivitis associated with autoimmune skin disorder
- Conjunctivitis associated with dermatitis herpetiformis
- Dermatitis herpetiformis
- Gluten intolerance
- Herpetiform eruption
- Hydroa herpetiformis
- Linear IgA dermatosis
- Localized pemphigoid
- Oral mucosal involvement by dermatitis herpetiformis
- Pemphigoid
- Pretibial pemphigoid
- Vesicular eruption
Instructional NotesGuidance
Instructions from the official ICD-10-CM Tabular List that apply to L12.2: its own notes plus those printed at L12, block L10-L14, 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.
- Juvenile dermatitis herpetiformis
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.
Referenced in Other NotesGuidance
Instructional notes printed at other codes that name L12.2, its category, or a range that includes it.
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
Disease, diseased See Also: Syndrome;
chronic of childhood L12.2
juvenile L12.2
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Clinical InformationClinical
Childhood Linear IgA Disease
a blistering disorder characterized by linear deposition of iga at the dermoepidermal junction.Pemphigoid, Bullous
a chronic and relatively benign subepidermal blistering disease usually of the elderly and without histopathologic acantholysis.
Patient EducationClinical
Pemphigus
Pemphigus is an autoimmune disorder. If you have it, your immune system attacks healthy cells in your skin and mouth, causing blisters and sores. No one knows the cause. Pemphigus does not spread from person to person. It does not appear to be inherited. But some people's genes put them more at risk for pemphigus.
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Convert L12.2 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About L12.2Overview
What is the ICD-10 code for chronic bullous disease of childhood?
The ICD-10-CM code for chronic bullous disease of childhood is L12.2 (sometimes written as L122). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
Is L12.2 (Pemphigoid) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report chronic bullous disease of childhood on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
What MS-DRG does L12.2 group to?
When chronic bullous disease of childhood 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.
Who can L12.2 be reported for?
The Medicare Code Editor checks chronic bullous disease of childhood against patient demographics: this code is intended for pediatric patients (age 0 through 17). Claims outside these limits are flagged as inconsistent.
Can L12.2 be reported with a code from O26.4?
Not as a rule. The Excludes1 note at L12, which applies to L12.2, lists "herpes gestationis (O26.4-)". 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).
Does L12.2 risk-adjust for Medicare Advantage payment?
Not for Medicare Advantage: L12.2 maps to no category in the CMS-HCC V28 model. It still risk-adjusts in the RxHCC Part D (V08) category 314 (Pemphigus, Pemphigoid, and Other Bullous Skin Disorders).
