D18.0 ICD-10-CM Code: Hemangioma

Coding instructions

Official Tabular Instructional Notes: the inclusion, exclusion and sequencing notes published for D18.0 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 D18.0 itself; “inherited from” names the category or block whose note applies here.

Coder workflow for D18.0

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

Before you code D18.0

1. D18.0 is not reportable as written. Select the more specific code beneath it that the documentation supports. Codes are reported to the highest level of specificity the classification provides (Guidelines I.B.2).

   ReviewD18.00, D18.01, D18.02, D18.03, D18.09

   See the relationships section · Guide: How to choose an ICD-10-CM code →

2. Confirm the documented site and behavior (this code’s block classifies benign neoplasms), whether the site is primary or secondary, and whether the malignancy is current or a personal history: a previously excised malignancy with no further treatment and no evidence of disease is history, not current disease. Verify the site against the Table of Neoplasms. Neoplasm chapter guidelines (Guidelines I.C.2.a, I.C.2.d, I.C.2.m).

   See the Table of Neoplasms entries · Guide: Active cancer vs history of cancer →

Choose the right path

1. Does the documentation support one of the more specific codes beneath D18.0?
   Yes → Select that code and continue the checks below on its own page.
   No → D18.0 cannot be reported as written; query for the specificity its subcategory needs.

   ReviewD18.00, D18.01, D18.02, D18.03, D18.09

Consider D18.0. Then confirm the code is valid for the date of service in the Verify section.

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).

Anatomical site

At the most specific level the record states; a site the classification separates cannot be assumed from a procedure or a measurement.

Behavior and current-versus-history status

Malignant, in situ, benign or uncertain; primary or secondary; current disease or personal history (Guidelines I.C.2.m).

Official instructions as workflow

• Excludes2 — not part of D18.0(4 notes)

  Coding workflow: The conditions named in this note are not included in D18.0. When the record documents both, both may be reported; the note is a boundary, not a prohibition.

  CompareD35.6, D22, Q82.5

  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.

Don’t confuse D18.0 with…

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

The codes most likely to be picked instead of D18.0 — 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.

• D35.6— 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 benign neoplasm of glomus jugulare adds D35.6; it is not part of this code and both may be reported when both are documented.

  Full comparison: D18.0 vs D35.6 →

• D22— 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 blue or pigmented nevus adds D22; it is not part of this code and both may be reported when both are documented.

  Full comparison: D18.0 vs D22 →

• Q82.5— 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 vascular nevus adds Q82.5; it is not part of this code and both may be reported when both are documented.

  Full comparison: D18.0 vs Q82.5 →

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

• Not billable as written — a more specific code is required: D18.00, D18.01, D18.02, D18.03, D18.09.

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

Other codes that name D18.0 or its code family, from the CMS ICD-10-CM tabular instructional notes. Tabular-note edges are stored at the code family level that carries each note.

Referenced by 3 Excludes1 notes: D21 — Other benign neoplasms of connective and other soft tissue (via D18.-), D21 — Other benign neoplasms of connective and other soft tissue, D33 — Benign neoplasm of brain and other parts of central nervous system.

These codes’ tabular lists mark this diagnosis as mutually exclusive — not reported together unless the conditions are documented as unrelated.

Referenced by 1 Excludes2 note: Q27 — Other congenital malformations of peripheral vascular system (via D18.-).

These codes’ tabular lists name this diagnosis as distinct — both may be reported when both are documented.

Contextual Map

Every relationship of D18.0 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.

Run D18.0 with these 3 related codes in Claim Check

Hierarchy

• C00-D49 — Chapter 2: Neoplasms (C00-D49) (C00-D49)[Hierarchy]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• D10-D36 — Benign neoplasms, except benign neuroendocrine tumors[Hierarchy]— CMS ICD-10-CM tabular structure · icd10cm-fy2026

Referenced by Excludes1 notes

• D21 — Other benign neoplasms of connective and other soft tissue[Excludes1](via D18.-): “benign neoplasm of vascular tissue (D18.-)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026
• D21 — Other benign neoplasms of connective and other soft tissue[Excludes1]: “hemangioma (D18.0-)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026
• D33 — Benign neoplasm of brain and other parts of central nervous system[Excludes1]: “angioma (D18.0-)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026

Referenced by Excludes2 notes

• Q27 — Other congenital malformations of peripheral vascular system[Excludes2](via D18.-): “hemangioma and lymphangioma (D18.-)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026

Nearest codes

• D18 — Hemangioma and lymphangioma, any site[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• D18.00 — Hemangioma unspecified site[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• D18.01 — Hemangioma of skin and subcutaneous tissue[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• D18.02 — Hemangioma of intracranial structures[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• D18.03 — Hemangioma of intra-abdominal structures[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• D18.09 — Hemangioma of other sites[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• D18.1 — Lymphangioma, any site[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

Common coding questions

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

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 D18.0 in its code family, with their registry titles.

• D18 — Hemangioma and lymphangioma, any site
• D18.00 — Hemangioma unspecified site
• D18.01 — Hemangioma of skin and subcutaneous tissue
• D18.02 — Hemangioma of intracranial structures
• D18.03 — Hemangioma of intra-abdominal structures
• D18.09 — Hemangioma of other sites
• D18.1 — Lymphangioma, any site

View all codes in the D18 family