AHA Coding Clinic® for ICD-10-CM and ICD-10-PCS - 2026 Quarter 4; New/Revised ICD-10-CM Codes

Lynch Syndrome

New category QA1 , Genetic disorders associated with neoplasms, not elsewhere classified, has been created, with subcategory QA1.7 , Inherited neoplasm predisposition syndromes involving multiple systems, not elsewhere classified, to identify hereditary cancer syndromes. Hereditary cancer syndromes are genetic conditions caused by inherited pathogenic gene mutations that significantly increase the risk of developing specific cancers, often with onset at an early age. Most hereditary cancer syndromes exhibit autosomal dominant inheritance. Code QA1.71 , Lynch syndrome, has been created to capture Lynch syndrome. Lynch syndrome, formerly known as hereditary nonpolyposis colorectal cancer, is an autosomal dominant genetic condition caused by inherited...

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