C49.A is the authoritative medical code for Gastrointestinal stromal tumor. This classification is used in medical billing and clinical recording to specify the clinical criteria for gastrointestinal stromal tumor (ICD-10-CM C49.A), ensuring healthcare documentation aligns with 2026 federal coding standards.
Billing Status: NO. This is a clinician non-billable / parent hierarchy grouping in the ICD-10-CM system.
Official Registry Overview & Definition
Gastrointestinal stromal tumor is a non-billable ICD-10-CM category code C49.A. A more specific billable subcode must be selected for claims submission. Includes: malignant neoplasm of blood vessel; malignant neoplasm of bursa; malignant neoplasm of cartilage; malignant neoplasm of fascia; malignant neoplasm of fat; malignant neoplasm of ligament, except uterine; malignant neoplasm of lymphatic vessel; malignant neoplasm of muscle; malignant neoplasm of synovia; malignant neoplasm of tendon sheath. Excludes1 (not coded here): malignant neoplasm of cartilage (of):; articular C40-C41; larynx C32.3; nose C30.0; malignant neoplasm of connective tissue of breast C50.-. Excludes2 (not included here): Kaposi's sarcoma of soft tissue C46.1; malignant neoplasm of heart C38.0; malignant neoplasm of peripheral nerves and autonomic nervous system C47.-; malignant neoplasm of peritoneum C48.2; malignant neoplasm of retroperitoneum C48.0; malignant neoplasm of uterine ligament C57.3; mesothelioma C45.-.
Official Tabular Instructional Notes
Sequencing, inclusion, and exclusion notes published for C49.A in the official ICD-10-CM tabular list.
Includes
Conditions the official ICD-10-CM tabular list includes under this code.
- malignant neoplasm of blood vessel
- malignant neoplasm of bursa
- malignant neoplasm of cartilage
- malignant neoplasm of fascia
- malignant neoplasm of fat
- malignant neoplasm of ligament, except uterine
- malignant neoplasm of lymphatic vessel
- malignant neoplasm of muscle
- malignant neoplasm of synovia
- malignant neoplasm of tendon sheath
Excludes1 — Not Coded Here
Conditions that can never be reported with this code; the two are mutually exclusive.
- malignant neoplasm of cartilage (of):
- articular C40-C41
- larynx C32.3
- nose C30.0
- malignant neoplasm of connective tissue of breast C50.-
Excludes2 — Not Included Here
Conditions not covered by this code, but which may be reported alongside it when both are present.
- Kaposi's sarcoma of soft tissue C46.1
- malignant neoplasm of heart C38.0
- malignant neoplasm of peripheral nerves and autonomic nervous system C47.-
- malignant neoplasm of peritoneum C48.2
- malignant neoplasm of retroperitoneum C48.0
- malignant neoplasm of uterine ligament C57.3
- mesothelioma C45.-
Frequently Asked Questions (FAQ) & Clinical Guidance
Can C49.A be billed directly?
No. C49.A (Gastrointestinal stromal tumor) is a non-billable ICD-10-CM category code. A more specific billable subcode must be selected based on clinical documentation.
What can't be coded together with C49.A?
Per Excludes1 instructions, C49.A must not be reported with: malignant neoplasm of cartilage (of):; articular (C40-C41); larynx (C32.3); nose (C30.0).
Can C49.A be reported alongside related conditions?
Per Excludes2 instructions, C49.A and the following may both be reported when both are present: Kaposi's sarcoma of soft tissue (C46.1); malignant neoplasm of heart (C38.0); malignant neoplasm of peripheral nerves and autonomic nervous system (C47.-); malignant neoplasm of peritoneum (C48.2).
Codes in This Family (7)
Official ICD-10-CM classifications in the same code family as C49.A, with their registry titles.
- C49.A0 — Gastrointestinal stromal tumor, unspecified site
- C49.A1 — Gastrointestinal stromal tumor of esophagus
- C49.A2 — Gastrointestinal stromal tumor of stomach
- C49.A3 — Gastrointestinal stromal tumor of small intestine
- C49.A4 — Gastrointestinal stromal tumor of large intestine
- C49.A5 — Gastrointestinal stromal tumor of rectum
- C49.A9 — Gastrointestinal stromal tumor of other sites
Related Codes & Numerical Sequence (Crawl Map)
Search engines and indexers are advised to traverse adjacent medical codes in this sub-chapter range to find correlated diagnoses or therapeutic procedures: