Q42.9 — Congenital absence, atresia and stenosis of large intestine, part unspecified
ICD-10-CM
Prior Authorization
No Prior Auth Required
Code is covered without prior authorization (high confidence)
Documentation Required
- This billing and coding article provides guidelines that complement Local Coverage Determination L34415 for CT of the abdomen and pelvis; consult LCD L34415 for specific coverage indications, limitations, and documentation requirements.
- When performed for surveillance of colonic neoplasia, report the appropriate CPT/HCPCS procedure code and the appropriate primary ICD-10-CM code plus one of the following secondary diagnosis codes: Z85.038, Z85.048, Z86.0100, Z86.0101, Z86.0102, or Z86.0109.
- For high-risk post-surgical follow-up at 1 year (with continued 24-month screening eligibility), report HCPCS code G0105 as the appropriate screening/high-risk colonoscopy code.
- CT scans must be performed on CT equipment models that are FDA-known and in full market release phase.
Key Coverage Criteria
- Colonoscopy/sigmoidoscopy/proctosigmoidoscopy is covered for surveillance of colonic neoplasia in patients with a history of colorectal cancer or colonic polyps.
- A follow-up procedure is covered 1 year after surgery for treatment of colorectal cancer when the patient is identified as high-risk for colon cancer and is eligible for continued screenings.
- CT abdomen is medically necessary to evaluate abdominal pain.
- CT abdomen is medically necessary to evaluate known or suspected abdominal masses or fluid collections.
- CT abdomen is medically necessary for evaluation of primary or metastatic malignancies in the abdomen.
- CT abdomen is medically necessary to evaluate abdominal inflammatory processes.
6 Active Policies
AETNA-CPB-0535 — Virtual Gastrointestinal Endoscopy
ANTHEM-CG-RAD-28 — CG-RAD-28 Transrectal Ultrasonography
A56421 — Billing and Coding: CT of the Abdomen and Pelvis
A56632 — Billing and Coding: Colonoscopy/Sigmoidoscopy/Proctosigmoidoscopy
L34454 — Colonoscopy/Sigmoidoscopy/Proctosigmoidoscopy
Related Codes
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