L30.2 ICD-10-CM Code: Cutaneous autosensitization

Coding instructions

Official Tabular Instructional Notes: the inclusion, exclusion and sequencing notes published for L30.2 in the official ICD-10-CM tabular list, quoted as published.

Source: CMS/CDC — ICD-10-CM Tabular ListRelease: FY2026Effective: October 1, 2025

Notes without a marker are published on L30.2 itself; “inherited from” names the category or block whose note applies here.

Coder workflow for L30.2

MedCoder structured workflow — derived from this code’s own official record

Documentation check

The provider’s diagnostic statement

Codes are assigned from the provider’s documented diagnosis, not from clinical criteria, test values or a medication list (Guidelines I.A.19).

Official instructions as workflow

• Excludes2 — not part of L30.2(10 notes)

  Coding workflow: The conditions named in this note are not included in L30.2. When the record documents both, both may be reported; the note is a boundary, not a prohibition.

  CompareL85.3, L41.3, I87.2, D71, L08.0, L13.0

  See the official tabular notes · Guidelines I.A.12.b

Every row is derived from this code’s own record — its title, tabular notes, 7th-character family and same-category siblings — with fixed MedCoder wording; nothing is inferred about a patient. The official notes and guideline text are in the sections each row links to, and they control.

Indexed Clinical Terms (6)

Official source data — entries quoted as published, in the Index’s own lookup phrasing

Clinical term phrases from the official ICD-10-CM Index to Diseases and Injuries that map to this code. These are alphabetic-index entries shown as the Index writes them — lookup phrasing, not necessarily the wording of a final diagnosis.

• Autosensitization, cutaneous
• Candidid
• Dermatophytid
• Eczematid
• Id reaction (due to bacteria)
• Levurid

Don’t confuse L30.2 with…

MedCoder analysis — pairs from this code’s official notes, distinctions written by MedCoder

The codes most likely to be picked instead of L30.2 — named in its own official notes, or sharing its laterality or encounter family — with what separates them and which documentation moves the case. Each links to the full comparison.

• L30.9— Specificity relationship (Review)

  Overlapping diagnoses in the same category.

  Overlapping codes in the same category — the documentation decides which is the more specific fit.

  What moves you there: A record that documents no more than “Dermatitis, unspecified” takes L30.9; specificity in the record moves it back here.

  Full comparison: L30.2 vs L30.9 →

• L23— Excludes2 relationship (Informational)

  Distinct conditions — both may be reported.

  A distinct condition — both may be reported when both are documented.

  What moves you there: Documentation of contact dermatitis adds L23; it is not part of this code and both may be reported when both are documented.

  Full comparison: L30.2 vs L23 →

• L25— Excludes2 relationship (Informational)

  Distinct conditions — both may be reported.

  A distinct condition — both may be reported when both are documented.

  What moves you there: Documentation of contact dermatitis adds L25; it is not part of this code and both may be reported when both are documented.

  Full comparison: L30.2 vs L25 →

• L85.3— Excludes2 relationship (Informational)

  Distinct conditions — both may be reported.

  A distinct condition — both may be reported when both are documented.

  What moves you there: Documentation of dry skin dermatitis adds L85.3; it is not part of this code and both may be reported when both are documented.

  Full comparison: L30.2 vs L85.3 →

• L41.3— Excludes2 relationship (Informational)

  Distinct conditions — both may be reported.

  A distinct condition — both may be reported when both are documented.

  What moves you there: Documentation of small plaque parapsoriasis adds L41.3; it is not part of this code and both may be reported when both are documented.

  Full comparison: L30.2 vs L41.3 →

• I87.2— Excludes2 relationship (Informational)

  Distinct conditions — both may be reported.

  A distinct condition — both may be reported when both are documented.

  What moves you there: Documentation of stasis dermatitis adds I87.2; it is not part of this code and both may be reported when both are documented.

  Full comparison: L30.2 vs I87.2 →

Relationships are read from this code's own official notes, its laterality siblings and its encounter family; the wording of each distinction is MedCoder editorial, and the documentation named in each “what moves you there” line is the official note phrase or sibling title itself. Source: CMS ICD-10-CM tabular instructional notes; ICD-10-CM Official Guidelines, Section I.A.12.a.

Verify Before Coding

• No Medicare Code Editor or MS-DRG Definitions Manual restrictions apply to this code.

From the code registry, the Medicare Code Editor, and the MS-DRG Definitions Manual. Check it against a full claim in Claim Check.

Relationships & Classification

MedCoder structured relationships — computed from published CMS and AHRQ datasets

MS-DRG Grouper Relationships (FY2026)

Potential MS-DRG participation — not a DRG assignment.

FY2026 MS-DRG: not on the CMS CC/MCC list — as a secondary diagnosis this code does not change MS-DRG severity for that release.

Named in the grouper logic of 2 MS-DRGs: DRG 606 (MDC 09), DRG 607 (MDC 09).

From the CMS MS-DRG Definitions Manual (Appendices B and C). Actual DRG assignment depends on the complete claim.

Clinical classification (AHRQ CCSR):SKN007 — Other specified and unspecified skin disorders (default); INJ031 — Allergic reactions.

Clinical Classifications Software Refined (CCSR) for ICD-10-CM Diagnoses. Healthcare Cost and Utilization Project (HCUP), Agency for Healthcare Research and Quality.

Related Codes

Same clinical category (CCSR)

AHRQ's Clinical Classifications Software groups these diagnoses under the same clinical categories (Other specified and unspecified skin disorders, Allergic reactions).

L23.81 — Allergic contact dermatitis due to animal (cat) (dog) dander, L23.89 — Allergic contact dermatitis due to other agents, L23.9 — Allergic contact dermatitis, unspecified cause, L27.0 — Generalized skin eruption due to drugs and medicaments taken internally, L27.1 — Localized skin eruption due to drugs and medicaments taken internally, L27.2 — Dermatitis due to ingested food, L27.8 — Dermatitis due to other substances taken internally, L27.9 — Dermatitis due to unspecified substance taken internally, L30.0 — Nummular dermatitis, L30.1 — Dyshidrosis [pompholyx], L30.8 — Other specified dermatitis, L30.9 — Dermatitis, unspecified, L50.0 — Allergic urticaria, L50.1 — Idiopathic urticaria, L50.2 — Urticaria due to cold and heat, L50.3 — Dermatographic urticaria, L50.4 — Vibratory urticaria, L50.5 — Cholinergic urticaria, L50.6 — Contact urticaria, L50.8 — Other urticaria, +242 more

Contextual Map

Every relationship of L30.2 in one view: hierarchy, official tabular instructions in both directions, clinical classification, risk adjustment, MS-DRG participation, index terms and change history — each edge carrying the CMS source it derives from.

Hierarchy

• L00-L99 — Chapter 12: Diseases of the Skin and Subcutaneous Tissue (L00-L99) (L00-L99)[Hierarchy]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• L20-L30 — Dermatitis and eczema[Hierarchy]— CMS ICD-10-CM tabular structure · icd10cm-fy2026

Clinical classification (CCSR)

• SKN007 — Other specified and unspecified skin disorders[CCSR]— AHRQ CCSR for ICD-10-CM Diagnoses (HCUP)
• INJ031 — Allergic reactions[CCSR]— AHRQ CCSR for ICD-10-CM Diagnoses (HCUP)

MS-DRG Grouper

• DRG 606 — MINOR SKIN DISORDERS WITH MCC[MS-DRG]: “MINOR SKIN DISORDERS WITH MCC (MDC 09)”— CMS MS-DRG Definitions Manual (Appendix B) · FY2026
• DRG 607 — MINOR SKIN DISORDERS WITHOUT MCC[MS-DRG]: “MINOR SKIN DISORDERS WITHOUT MCC (MDC 09)”— CMS MS-DRG Definitions Manual (Appendix B) · FY2026

MDC crossing

• MDC 09 — Diseases and Disorders of the Skin, Subcutaneous Tissue and Breast[MDC crossing]: “Diseases and Disorders of the Skin, Subcutaneous Tissue and Breast — the grouper's crossing between diagnoses and procedures: a principal diagnosis sets the MDC, and same-MDC procedures move the stay to its surgical DRGs. 7,376 same-MDC procedures group here; browse them on the MDC page.”— CMS MS-DRG Definitions Manual · FY2026

Index entries

• Autosensitization, cutaneous[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2026
• Candidid[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2026
• Dermatophytid[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2026
• Eczematid[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2026
• Id reaction (due to bacteria)[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2026
• Levurid[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2026

Nearest codes

• L30 — Other and unspecified dermatitis[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• L30.0 — Nummular dermatitis[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• L30.1 — Dyshidrosis [pompholyx][Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• L30.3 — Infective dermatitis[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• L30.4 — Erythema intertrigo[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• L30.5 — Pityriasis alba[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• L30.8 — Other specified dermatitis[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• L30.9 — Dermatitis, unspecified[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026

Change history

• FY2016 — In the code set at ICD-10-CM adoption [Change history]— CMS release files (code change ledger) · icd10cm-fy2016

Sources for this page

Codes, titles, notes, index terms and mappings on this page are transcribed from the datasets below. Relationships MedCoder computed and text MedCoder wrote are labelled where they appear.

Code, title, tabular notes and index terms Official source data

CMS/CDC ICD-10-CM FY2026 tabular list, index and tables, effective October 1, 2025 Release, file and checksum · Publisher’s page

Claim edits Official source data

CMS Definitions of Medicare Code Edits — v43.1 (April 2026) Release, file and checksum · Publisher’s page

Inpatient payment groups Official source data

CMS MS-DRG Definitions Manual (incl. Appendix B diagnosis index, Appendix C CC/MCC list, Appendix E procedure index) and IPPS Final Rule tables — v43 Release, file and checksum · Publisher’s page

Change history and date-of-service validity Official source data

CMS ICD-10-CM release addenda, ingested release by release into the change ledger Release, file and checksum · Publisher’s page

Comparisons, relationships and the contextual map MedCoder structured relationship

Computed by MedCoder from the tabular notes and tables above; every derived relationship is marked as derived where it appears

Summary and FAQ answers MedCoder explanation

Written by MedCoder to explain the sources above: drafted with AI assistance, checked by a person against the release files, and labelled as MedCoder text where it appears. Not official text.

Labels on this page: Official source data · MedCoder structured relationship · MedCoder explanation. How to read the labels · All data sources and release dates

Nearest Codes in This Family

Official ICD-10-CM classifications closest to L30.2 in its code family, with their registry titles.

• L30 — Other and unspecified dermatitis
• L30.0 — Nummular dermatitis
• L30.1 — Dyshidrosis [pompholyx]
• L30.3 — Infective dermatitis
• L30.4 — Erythema intertrigo
• L30.5 — Pityriasis alba
• L30.8 — Other specified dermatitis
• L30.9 — Dermatitis, unspecified

View all codes in the L30 family