Medical Costs Payable (Notes)

6 Months Ended

Jun. 30, 2017

Medical Costs Payable Text Block

Medical Costs Payable

The following table shows the components of the change in medical costs payable for the six months ended June 30:

(in millions)	2017			2016
Medical costs payable, beginning of period	$	16,391		$	14,330
Acquisitions	76			—
Reported medical costs:
Current year	65,208			58,602
Prior years	(580		)	(300		)
Total reported medical costs	64,628			58,302
Medical payments:
Payments for current year	(49,673		)	(43,476		)
Payments for prior years	(13,712		)	(12,524		)
Total medical payments	(63,385		)	(56,000		)
Medical costs payable, end of period	$	17,710		$	16,632

For the six months ended June 30, 2017 and 2016 the medical cost reserve development included no individual factors that were material. Medical costs payable included reserves for claims incurred by insured customers but not yet reported to the Company of $12.6 billion and $11.6 billion at June 30, 2017 and December 31, 2016, respectively.