This page addresses follow-up questions and additional information pertinent to our webinar
Investigating Injections & Infusions.
** The coding information and guidance are valid at the time of publishing. Learners are encouraged to research
subsequent official guidance in the areas associated with the topic as they can change rapidly.

Q:  A patient was seen for low potassium level. He received 1 hour of intravenous hydration fluid mixed with potassium for treatment of the patient's low potassium level. What would the correct CPT code be for this encounter?​
A:  Report CPT code 96365, Intravenous infusion, for therapy, prophylaxis, or diagnosis (specify substance or drug); initial, up to 1 hour, for the intravenous infusion of potassium. It would be inappropriate to report the hydration code for this encounter because the infusion was provided primarily for treatment of the patient's low potassium level.​

Q:  For hydration to be considered medically necessary, is there a minimum flow rate and/or a specific volume that must be infused?​
A:  Some payers may have specific guidelines for these. One Medicare Administrative Contractor indicates providers should not bill hydration if the total volume infused is less than 500cc. Be sure to check with your payers!​

​Q:  Can more than one concurrent infusion be reported per encounter?​
A:  No.  Per CPT Coding Handbook; A concurrent infusion service is not time based and is only reported once per day regardless of whether an additional new drug or substance is administered concurrently. Hydration may not be reported concurrently with any other service. A separate subsequent concurrent administration of another new drug or substance (the third substance or drug) is not reported.​

Looking for additional information on this topic?

Heather Bertolami, CCS

Heather Bertolami, CCS

Senior Coding Quality Auditor

Heather brings over 20 years of experience to the Haugen team, specializing in a variety of HIM and coding roles. She started her career as a coder and quickly moved into management positions, eventually becoming an auditor. Now auditing for 8 years, Heather specializes in inpatient coding with a focus on DRGs. She enjoys digging into our client data to help them find areas of opportunity, providing them with the necessary information, guidelines and best practices to improve their skills. Heather’s humorous personality provides our clients with an easygoing environment to enhance their coding skills with confidence.

Terri Reid, CCS, CCS-P, CDIP, AHIMA-Approved ICD-10-CM/PCS Trainer

Terri Reid, CCS, CCS-P, CDIP, AHIMA-Approved ICD-10-CM/PCS Trainer

Senior Coding Quality Auditor

Terri comes to Haugen group with 25+ years of health information management experience in coding, auditing and education. She spent a number of years volunteering as an EMT and working in an Emergency Department before she transitioned into a career coding ED records. It wasn’t long before she was trained to code SDS and IP records eventually using her clinical background to help pioneer a concurrent query program at a level I trauma facility in the northeast. With the implementation of ICD-10, she helped develop coding protocols as well as provide education to physicians on the impact of their documentation.


  1. Emily Nylund

    If a patient comes in the morning for an infusion of antibiotics and anti-nausea push and then returns in the evening for the exact same service, how are the evening services billed?

    • kkluglein

      Hi Emily,

      In addition to checking with your payer, please see Coding Clinic for HCPCS (4Q 2004 page 6: CMS changing from Q codes to CPT codes or drug administration):

      Multiple visits for administration-same day The November 2004 final rule instructs hospitals to use modifier 59 (distinct procedure) when billing charges for drug administration services furnished during multiple visits that follow the initial visit on the same day. For example, a patient may have two visits to the hospital for antibiotic administration on the same day.

      The hospital should assign code 90780 with modifier 59 for each separate visit for infusion. With modifier 59 appended to CPT codes 90780 and 90781, the OCE will allow up to four units of APC 0120 (infusion of nonchemotherapy drugs) to be paid.

      If modifier 59 is not reported, the OCE will collapse all codes that map to a particular APC into one unit of that APC and will only pay one unit of each applicable APC.

      Note that 90780 and 90781 were deleted in 2009. Instead, you’ll need to use the appropriate injection and infusion code from the current code list.

      If you are looking for additional education on this topic, please check out our online course series, Coding for Injections and Infusions:


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