ICD10
ICD-10 Code C49.A: Gastrointestinal stromal tumor
Reviewed by HealthAssure Clinical TeamUpdated 21 May 2026
What is this code?
ICD-10 entries help standardize how diagnoses are organized for coding, reporting, analytics, and documentation. This code sits within the broader ICD-10 area for Neoplasms (C00-D49).
When is it used?
- May be used when a clinician documents gastrointestinal stromal tumor in a patient's medical record.
- May appear in hospital records, claims, referrals, and clinical documentation.
- This code may act more like a grouping or parent code, so a more specific child code may be used in final documentation when available.
What it does not mean
- A code alone does not explain severity, treatment plan, or outcome.
- A medical code should not be treated as a substitute for a doctor's diagnosis or advice.
- This entry may represent a broader category rather than the most specific billable code.
Code hierarchy
chapter
2Neoplasms (C00-D49)
block
C00-C96Malignant neoplasms
block
C00-C75Malignant neoplasms, stated or presumed to be primary (of specified sites), and certain specified histologies, except neuroendocrine, and of lymphoid, hematopoietic and related tissue
block
C45-C49Malignant neoplasms of mesothelial and soft tissue
category
C49Malignant neoplasm of other connective and soft tissue
currentC49
Where you may see this code
You may see this entry in coding references, medical records, or claims workflows when a broader diagnosis category is being reviewed before a more specific code is chosen.
Related specialists
OncologistGeneral PhysicianGastroenterologist
Related codes
C49.A0Gastrointestinal stromal tumor, unspecified sitecodeC49.A1Gastrointestinal stromal tumor of esophaguscodeC49.A2Gastrointestinal stromal tumor of stomachcodeC49.A3Gastrointestinal stromal tumor of small intestinecodeC49.A4Gastrointestinal stromal tumor of large intestinecodeC49.A5Gastrointestinal stromal tumor of rectumcodeC49.A9Gastrointestinal stromal tumor of other sitescode
Sibling codes
C49.0Malignant neoplasm of connective and soft tissue of head, face and neckbillableC49.1Malignant neoplasm of connective and soft tissue of upper limb, including shoulderC49.2Malignant neoplasm of connective and soft tissue of lower limb, including hipC49.3Malignant neoplasm of connective and soft tissue of thoraxbillableC49.4Malignant neoplasm of connective and soft tissue of abdomenbillableC49.5Malignant neoplasm of connective and soft tissue of pelvisbillableC49.6Malignant neoplasm of connective and soft tissue of trunk, unspecifiedbillableC49.8Malignant neoplasm of overlapping sites of connective and soft tissuebillableC49.9Malignant neoplasm of connective and soft tissue, unspecifiedbillable
Coding guidelines
Common synonyms
Gastrointestinal stromal tumor
Frequently asked questions
About this content
This page is prepared by HealthAssure's clinical team using official coding standards from ICD-10. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.