ICD-10 Code D18.03 – Hemangioma of intra-abdominal structures (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code D18.03 – Hemangioma of intra-abdominal structures
What it is
D18.03 identifies a benign vascular tumor located within intra-abdominal structures. It is used when documentation specifies a hemangioma in an internal abdominal organ or related intra-abdominal site.
Clinical signs
Clinical features vary; refer to documentation. These lesions may be found incidentally on imaging or noted because of abdominal pain, mass effect, or organ-specific findings.
When to use this code
Use D18.03 when the provider documents a hemangioma arising in an intra-abdominal structure and the site is not better captured by a more specific code. It is appropriate for confirmed benign vascular lesions of abdominal organs or tissues. Check documentation if the exact anatomic location is unclear.
Do not use for
Do not use this code for hemangiomas in skin, subcutaneous tissue, or other clearly different sites. Do not use it when the record only says “mass” or “lesion” without confirming a hemangioma.
Coding tip
Verify the exact intra-abdominal site in the note, because coding accuracy depends on documented location.