B The Respiratory System body system is identified by the character “B” in the 2nd character position and grouped within the Radiation Oncology section of the ICD-10-PCS coding structure. The 2nd character of an ICD-10-PCS code defines the particular body system or general physiological system or anatomical region involved.
Section:
D = Radiation Oncology
Body System:
0 - Central & Peripheral Nervous System7 - Lymphatic & Hematologic System8 - Eye9 - Ear, Nose, Mouth & ThroatB - Respiratory SystemD - Gastrointestinal SystemF - Hepatobiliary System & PancreasG - Endocrine SystemH - SkinM - BreastP - Musculoskeletal SystemT - Urinary SystemU - Female Reproductive SystemV - Male Reproductive SystemW - Anatomical Regions