C49.A5 — Gastrointestinal stromal tumor of rectum

BillableCC

Is C49.A5 billable?

Yes — C49.A5 is billable for FY2027. C49.A5 is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. C49.A5 may be submitted for encounters from October 1, 2026 through September 30, 2027.

C49.A5 at a glance

Code	C49.A5
Description	Gastrointestinal stromal tumor of rectum
Billable	Yes
Code set	ICD-10-CM FY2027
Valid for encounters	October 1, 2026 – September 30, 2027

Which MS-DRGs does C49.A5 group to?

C49.A5 sits in MDC 06 and helps define the logic of 3 MS-DRGs (version 44, FY2027). Which one a stay actually groups to also depends on procedures and secondary diagnoses.

374Digestive Malignancy with MCCmedical
375Digestive Malignancy with CCmedical
376Digestive Malignancy without CC/MCCmedical

As a secondary diagnosis, C49.A5 is a complication or comorbidity (CC), which can move a stay into a higher-paying DRG.

How is C49.A5 listed in the Alphabetic Index?

These are the routes through the Alphabetic Index that lead to C49.A5. They show the wording a clinician may have documented, which often differs from the Tabular description.

Tumor › stromal › gastrointestinal › rectum
Tumor › stromal › gastrointestinal › malignant › rectum

Excludes1 — never code together — inherited from C49

The conditions below can never be reported together with C49.A5 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.

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 — inherited from C49

The conditions below are not part of C49.A5, but a patient may have both at the same time. When documentation supports it, C49.A5 and the excluded code may both be reported.

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.-)

How long has C49.A5 existed?

C49.A5 first appears in FY2018 (FY2017 is not available, so it may have appeared then).

Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.