Abnormal cytological findings in specimens from oth org/tiss

This code signifies the presence of atypical or malignant cells identified during a microscopic examination of tissue or fluid samples obtained from organs, systems, or tissues other than those specifically covered by more precise cytological abnormality codes (e.g., female genital tract, respiratory tract). It indicates a non-specific abnormal finding requiring further investigation or clinical correlation.

Use this code when pathology reports indicate abnormal cytology from sites such as the gastrointestinal tract (e.g., gastric lavage, bile duct brushings), urinary tract (e.g., urine cytology for bladder cancer screening, excluding specific hematuria codes), serous fluids (e.g., peritoneal, pleural, pericardial fluid cytology), or soft tissue aspirations, and a more specific R-code is not available. Documentation must clearly state "abnormal cytology," "atypical cells," or "malignant cells" from a specified non-genital/non-respiratory site.

• Do not use this code if a more specific R-code exists for the anatomical site (e.g., R87.6- for female genital tract, R84.6 for respiratory tract).
• Always sequence this code after the definitive diagnosis if one is established, or as the primary diagnosis if the abnormal cytology is the reason for the encounter and no definitive diagnosis has been made.
• Ensure the pathology report specifies the organ, system, or tissue from which the abnormal cells were identified to support the "other organs, systems and tissues" designation.