2027 ICD-10-CM Diagnosis Code L98.1Factitial dermatitis

ICD-10-CM Codes›L00–L99›L80-L99›L98

ICD-10-CM L98.1
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

L98.1 is a billable ICD-10-CM diagnosis code for factitial dermatitis. 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 artefactual skin disease. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Other specified inflammatory condition of skin.

Code Identity

ICD-10-CM Code
L98.1
Billable Status
Yes — Valid for Submission
Code Describes
Factitial dermatitis
Short Description
Factitial dermatitis
Same as the full description in the CMS dataset.
Parent Code
L98
Other disorders of skin and subcutaneous tissue, not elsewhere classified

Code Classification

ChapterL00–L99Diseases of the skin and subcutaneous tissue
SectionL80-L99Other disorders of the skin and subcutaneous tissue
CategoryL98Other disorders of skin and subcutaneous tissue, not elsewhere classified
This CodeL98.1Factitial dermatitis

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Artefactual skin disease
  • Cutaneous Munchausen syndrome
  • Dermatological pathomimicry
  • Factitious blistering
  • Factitious skin disease
  • Patch test artifact
  • Pseudostigmata
  • Religious stigmata
  • Repetitive self-excoriation

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to L98.1: its own notes plus those printed at 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.

  • Neurotic excoriation

Excludes1

Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.

  • Excoriation (skin-picking) disorder (F42.4)

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.

From Chapter 12 (L00-L99) Diseases of the skin and subcutaneous tissue applies to 1,001 codes
  • 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 L98.1, its category, or a range that includes it.

Excludes1 2

These codes carry an Excludes1 note naming L98.1: they are not reported together with it, unless the two conditions are unrelated.

  • F42.4 Excoriation (skin-picking) disorder
    factitial dermatitis (L98.1)
  • L29 Pruritus
    neurotic excoriation (L98.1)

Excludes2 2

These codes carry an Excludes2 note naming L98.1: its condition is not part of those codes, and both may be reported when the patient has both.

  • F68.1 Factitious disorder imposed on self
    factitial dermatitis (L98.1)
  • Block L20-L30 Dermatitis and eczema
    factitial dermatitis (L98.1)

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR SKN002
Other specified inflammatory condition of skin
Default principal diagnosis: inpatient Yes · outpatient Yes

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 L98.1 to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
698.4 Dermatitis factitia
Exact Match The mapping is direct, with no qualifiers.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About L98.1Overview

What is the ICD-10 code for factitial dermatitis?

The ICD-10-CM code for factitial dermatitis is L98.1 (sometimes written as L981). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

Is L98.1 a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report factitial dermatitis on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

What MS-DRG does L98.1 group to?

When factitial dermatitis 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 L98.1 be reported with F42.4?

Not as a rule. The Excludes1 note on L98.1 lists "Excoriation (skin-picking) disorder (F42.4)". 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).

What is the ICD-9 equivalent of L98.1?

Under the General Equivalence Mappings, factitial dermatitis converts to ICD-9-CM 698.4 (dermatitis factitia). The mapping is a direct match.