In simple words: This code covers a kidney dialysis treatment where a doctor checks on the patient once during the treatment.The treatment cleans the blood using a machine.

This CPT code, 90935, reports a hemodialysis procedure performed by a physician or other qualified healthcare professional, including a single evaluation and management (E/M) service related to the patient's renal disease on the same day.This code is used for inpatient end-stage renal disease (ESRD) and non-ESRD procedures, or for outpatient non-ESRD dialysis services.If multiple evaluations are needed during the hemodialysis procedure, code 90937 should be used instead. Separately identifiable E/M services unrelated to the dialysis procedure require the use of modifier 25 with appropriate E/M codes.

Example 1: A patient with ESRD undergoes hemodialysis. The physician performs the procedure and performs a single evaluation to assess the patient's response to the treatment and adjust the dialysis parameters accordingly., An outpatient with non-ESRD renal failure receives hemodialysis. The physician performs the procedure and conducts a single evaluation to monitor the patient's condition and assess the effectiveness of the treatment., An inpatient with a complication related to a kidney transplant undergoes hemodialysis. The physician performs the procedure and carries out one evaluation to monitor the patient's response to the treatment and manage any related complications.

Complete medical record including patient's history, physical exam findings, dialysis parameters, any complications, physician's assessment, and plan of care.

** Always refer to the most current CPT codebook and payer guidelines for accurate coding and billing practices.Understanding the difference between codes 90935 and 90937 is crucial for proper reimbursement.