Chiropractic Services - Initial Treatment Date
	
	
		
	
		
			| CARC/RARC | 
			DESCRIPTION | 
		
	
	
		
			| CO-16 | 
			Claim/service lacks information or has a submission/billing error(s) which is needed for adjudication. | 
		
		
			| MA121 | 
			Missing/incomplete/invalid x-ray date. | 
		
		
			| MA122 | 
			Missing/incomplete/invalid initial treatment date. | 
		
	
 
Common Reasons for Message
	- Initial treatment date in Item 14 is either missing or invalid
 
	- Incorrect qualifier was used on electronic claim
 
Next Step
	- Resubmit claim with initial treatment date Item 14 or electronic equivalent
	
		- Initial treatment date is required on all chiropractic claims involving spinal manipulation
 
	
	 
	- Resubmit electronic claim with correct qualifier for initial treatment date
	
		- Initial treatment date is submitted in Loop 2300
 
		- Initial treatment date is reported in a DTP segment in format CCYYMMDD
 
		- Qualifier must be submitted as 454
 
	
	 
Claim Submission Tips
	 
    	
	
		Last Updated Apr 02 , 2025