Box 21 - Diagnosis or Nature of Illness or Injury

Box Definition 

Box 21 on the CMS-1500 form is used to indicate the diagnosis codes for the patient.

In Kipu RCM

Let's review how to update Box 21 in the RCM!

• The patient's diagnosis can be managed within the Intake section of their profile. For more information, click here. 
• The diagnosis on a claim can be added or removed from a claim using a Claim Form Rule. 
• The diagnosis can be altered on a claim before submitting it using our Claim Edits feature. To learn more about this feature, click here.

EDI Loop and Segment

Loop 2300, Segment HI. For additional information on loops and segments, click here.