ICD10 code of Familial Adenomatous Polyposis and ICD9 code

Familial Adenomatous Polyposis (FAP) is classified under the ICD-10-CM code D12.6 (Benign neoplasm of unspecified part of intestine) or more specifically D12.0 when identifying the polyps, while the legacy ICD-9-CM code is 211.3. These codes are essential for medical billing, insurance authorization, and clinical documentation for patients managing this hereditary condition.

What is the clinical significance of Familial Adenomatous Polyposis?

Familial Adenomatous Polyposis is a rare, autosomal dominant genetic disorder characterized by the development of hundreds to thousands of adenomatous polyps in the colon and rectum. If left untreated, the risk of these polyps progressing to colorectal cancer approaches 100% by age 40. Understanding the specific diagnostic codes for Familial Adenomatous Polyposis helps ensure patients receive appropriate surveillance, including regular colonoscopies and genetic counseling, which are vital for early detection and management.

How is Familial Adenomatous Polyposis inherited?

Familial Adenomatous Polyposis is caused by a germline mutation in the APC gene. Because it follows an autosomal dominant inheritance pattern, each child of an affected parent has a 50% chance of inheriting the mutation. Genetic testing is the gold standard for confirming a diagnosis of Familial Adenomatous Polyposis in at-risk family members, often allowing for prophylactic interventions before malignancy develops.

What should patients know about coding and support?

Navigating the healthcare system with Familial Adenomatous Polyposis can be overwhelming. Proper coding (D12.6/211.3) is necessary to ensure that insurance covers frequent endoscopic screenings. Currently, 147 people with Familial Adenomatous Polyposis have joined the DiseaseMaps.org community to share their experiences and support one another. Key facts regarding the management of the condition include:

• Surveillance: Regular screening usually begins in the early teenage years.


• Surgical intervention: Prophylactic colectomy is often recommended to prevent cancer.


• Extra-colonic manifestations: Patients may also develop polyps in the stomach, duodenum, and desmoid tumors.

Next steps

• Consult with a gastroenterologist or a clinical geneticist to discuss your specific APC mutation.


• Ensure your medical records accurately reflect the diagnosis of Familial Adenomatous Polyposis for insurance coverage of regular screenings.


• Join the DiseaseMaps.org community to connect with other families living with Familial Adenomatous Polyposis.

Medical disclaimer: This information is for educational purposes only and does not replace professional medical advice, diagnosis, or treatment from a qualified healthcare provider.

References

• NIH Genetic and Rare Diseases Information Center (GARD): Familial Adenomatous Polyposis.


• Online Mendelian Inheritance in Man (OMIM): #175100 (Adenomatous Polyposis of the Colon).


• Orphanet: ORPHA683 (Familial Adenomatous Polyposis).


• The Polyposis Registry and major patient advocacy foundations.