2027 ICD-10-CM Diagnosis Code D18.02Hemangioma of intracranial structures

ICD-10-CM Codes›C00–D49›D10-D36›D18

ICD-10-CM D18.02
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

D18.02 is a billable ICD-10-CM diagnosis code for hemangioma of intracranial structures. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 91 through 93. Coders also document this condition as cavernous hemangioma of brain. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Benign neoplasms.

For Medicare Advantage risk adjustment, D18.02 maps to CMS-HCC Category 23 (Prostate, Breast, and Other Cancers and Tumors) under the V28 model, adding a risk factor of about 0.186 for a community, non-dual, aged beneficiary in payment year 2027.

Code Identity

ICD-10-CM Code
D18.02
Billable Status
Yes — Valid for Submission
Code Describes
Hemangioma of intracranial structures
Short Description
Hemangioma of intracranial structures
Same as the full description in the CMS dataset.
Parent Code
D18.0
Hemangioma

Code Classification

ChapterC00–D49Neoplasms
SectionD10-D36Benign neoplasms, except benign neuroendocrine tumors
CategoryD18Hemangioma and lymphangioma, any site
This CodeD18.02Hemangioma of intracranial structures

Medicare Risk Adjustment (HCC)Billing

D18.02 maps to a payment category in the CMS-HCC model used to risk-adjust Medicare Advantage payments. Weights are the published community factors for payment year 2027.

CMS-HCC V28 Category (Payment Model)
HCC 23— Prostate, Breast, and Other Cancers and Tumors
Payment HCC · PY 2027 one of 234 ICD-10-CM codes in this category
Risk Adjustment Factor (RAF) Weight
+0.186
community, non-dual, aged · ranges 0.186–0.237 across segments
Hierarchy
Superseded by HCC 17, HCC 18, HCC 19, HCC 20, HCC 21, and HCC 22
a more severe related category takes the payment when both are reported
Prior Model (CMS-HCC V24)
HCC 12
V24 retired V28 pays 100% of MA risk scores since PY 2026
Other CMS Models
PACE (CMS-HCC V22): HCC 12 · ESRD (V21): HCC 12 · ESRD (V24): HCC 12
ESRD V21 weights: 0.046 dialysis, 0.156–0.194 functioning graft · ESRD V24 weights: 0.045 dialysis, 0.162–0.219 functioning graft
Part D (RxHCC)
RxHCC 22 — Prostate, Breast, Bladder, and Other Cancers and Tumors
also risk-adjusts in the Part D prescription drug model (V08)

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.

  • Cavernous hemangioma of brain
  • Diffuse cerebrovascular disease
  • Erythrocytosis due to cerebellar hemangioma
  • Hemangioma of intracranial structure
  • Hereditary cavernous hemangioma of brain
  • Intracranial cavernous hemangioma
  • Sporadic cavernous malformation of cerebrum
  • Venous hemangioma
  • Venous hemangioma of brain

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to D18.02: its own notes plus those printed at D18 and Chapter 2. A note printed at a category, block or chapter applies to every code under it.

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 D18 Hemangioma and lymphangioma, any site applies to 6 codes
  • benign neoplasm of glomus jugulare (D35.6)
  • blue or pigmented nevus (D22.-)
  • nevus NOS (D22.-)
  • vascular nevus (Q82.5)

Notes

General instructions on how these codes are used.

From Chapter 2 (C00-D49) Neoplasms applies to 1,730 codes
  • Functional activity
  • All neoplasms are classified in this chapter, whether they are functionally active or not. An additional code from Chapter 4 may be used, to identify functional activity associated with any neoplasm.
  • Morphology [Histology]
  • Chapter 2 classifies neoplasms primarily by site (topography), with broad groupings for behavior, malignant, in situ, benign, etc. The Table of Neoplasms should be used to identify the correct topography code. In a few cases, such as for malignant melanoma and certain neuroendocrine tumors, the morphology (histologic type) is included in the category and codes.
  • Primary malignant neoplasms overlapping site boundaries
  • A primary malignant neoplasm that overlaps two or more contiguous (next to each other) sites should be classified to the subcategory/code .8 ('overlapping lesion'), unless the combination is specifically indexed elsewhere. For multiple neoplasms of the same site that are not contiguous, such as tumors in different quadrants of the same breast, codes for each site should be assigned.
  • Malignant neoplasm of ectopic tissue
  • Malignant neoplasms of ectopic tissue are to be coded to the site mentioned, e.g., ectopic pancreatic malignant neoplasms are coded to pancreas, unspecified (C25.9).

Source: CMS ICD-10-CM Tabular List. How to read instructional notes.

Referenced in Other NotesGuidance

Instructional notes printed at other codes that name D18.02, its category, or a range that includes it.

Excludes1 4

These codes carry an Excludes1 note naming D18.02: they are not reported together with it, unless the two conditions are unrelated.

  • D21 Other benign neoplasms of connective and other soft tissue
    benign neoplasm of vascular tissue (D18.-) names D18.-, which includes this code
  • D21 Other benign neoplasms of connective and other soft tissue
    hemangioma (D18.0-) names D18.0-, which includes this code
  • D33 Benign neoplasm of brain and other parts of central nervous system
    angioma (D18.0-) names D18.0-, which includes this code
  • D33 Benign neoplasm of brain and other parts of central nervous system
    hemangioma (D18.0-) names D18.0-, which includes this code

Excludes2 1

These codes carry an Excludes2 note naming D18.02: its condition is not part of those codes, and both may be reported when the patient has both.

  • Q27 Other congenital malformations of peripheral vascular system
    hemangioma and lymphangioma (D18.-) names D18.-, which includes this code

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 NEO073
Benign neoplasms
Default principal diagnosis: inpatient Yes · outpatient Yes

Clinical InformationClinical

  • Intracranial Hemangioma

    a hemangioma arising from the brain and meninges.

  • Hemangioma

    a vascular anomaly due to proliferation of blood vessels that forms a tumor-like mass. the common types involve capillaries and veins. it can occur anywhere in the body but is most frequently noticed in the skin and subcutaneous tissue. (from stedman, 27th ed, 2000)

Patient EducationClinical

Benign Tumors

Tumors are abnormal growths in your body. They can be either benign or malignant. Benign tumors aren't cancer. Malignant ones are. Benign tumors grow only in one place. They cannot spread or invade other parts of your body. Even so, they can be dangerous if they press on vital organs, such as your brain.

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Convert D18.02 to ICD-9-CMHistory

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

ICD-9-CM
228.02 Hemangioma intracranial
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 D18.02Overview

What is the ICD-10 code for hemangioma of intracranial structures?

The ICD-10-CM code for hemangioma of intracranial structures is D18.02 (sometimes written as D1802). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

Is D18.02 (Hemangioma) a billable code?

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

What MS-DRG does D18.02 group to?

When hemangioma of intracranial structures is the principal diagnosis on an inpatient stay, it groups to MS-DRG 91, 92, 93, with relative weights from 0.7783 to 1.7050 depending on complications. Higher weights mean higher Medicare reimbursement.

What is the ICD-9 equivalent of D18.02?

Under the General Equivalence Mappings, hemangioma of intracranial structures converts to ICD-9-CM 228.02 (hemangioma intracranial). The mapping is a direct match.

What HCC is D18.02?

D18.02 (hemangioma of intracranial structures) maps to CMS-HCC Category 23 (Prostate, Breast, and Other Cancers and Tumors), commonly written as HCC 23, in the CMS-HCC V28 model used for Medicare Advantage risk adjustment in payment year 2027. It mapped to HCC 12 under the retired V24 model. It also maps in the PACE (CMS-HCC V22), ESRD (V21), and ESRD (V24) models. In the Part D prescription drug model it maps to RxHCC 22.

Does D18.02 risk-adjust for Medicare Advantage payment?

Yes. When documented and reported on a Medicare Advantage encounter, D18.02 adds a risk adjustment factor of about 0.186 to the beneficiary's RAF score for a community, non-dual, aged enrollee (published V28 weights range from 0.186 to 0.237 depending on the payment segment). A more severe related category (HCC 17, HCC 18, HCC 19, HCC 20, HCC 21, and HCC 22) supersedes it when both are reported. See the full factor table on the HCC 23 category page.