MS‑DRG 321: Percutaneous Cardiovascular Procedures with Intraluminal Device with MCC or 4+ Arteries/Intraluminal Devices

What Medicare paid hospitals for MS‑DRG 321 in 2024: nationally, state by state and across hospitals.

Paid per case$22,1911.5× the all-DRG average

Discharges30,9990.63% of all Medicare discharges

Total paid$687.9M25th largest MS‑DRG by spending

Hospitals1,136in 50 states and DC

Charges ÷ paid7.4×$164,137 average charge

Relative weight2.7140FY2027, 3.6-day geometric mean stay; FY2026 2.7208 (−0.2%)

In 2024 Medicare paid hospitals an average of $22,191 per discharge for MS‑DRG 321, across 30,999 fee-for-service discharges at 1,136 hospitals: 0.63% of all Medicare inpatient discharges and $687.9M in total, the 25th largest MS‑DRG by Medicare spending.

By state, the average ran from $13,087 in Vermont to $30,388 in California. Across hospitals, half were paid between $18,523 and $24,046 per case, and the median hospital $20,691; the payment moves with each hospital’s wage index, teaching and low-income share, and with outlier cases.

Hospitals charged $164,137 on average for these stays, 7.4 times what Medicare paid: charges are list prices, while Medicare pays a fixed amount per MS‑DRG.

See MS‑DRG 321 on the interactive map Price an MS‑DRG 321 claim at any hospital Every MS‑DRG

What changed in FY2027

The rates for discharges from October 1, 2026 (MS‑DRG version 44) against FY2026.

MS‑DRG 321, FY2026 and FY2027
	FY2026	FY2027	Change
Relative weight	2.7208	2.7140	−0.2%
Geometric mean stay (days)	3.7	3.6	−0.1
Average stay (days)	4.9	4.8	−0.1

Not capped: the −0.2% is CMS’s yearly recalibration of every weight from recent claims and cost data.
Name, MDC and transfer status are unchanged.

FY2027 national base payment (illustration)

$20,050.90

The FY2027 weight times the operating standardized amount and the capital rate ($6,848.00 + $539.95) at a wage index of 1.0. No IME, DSH, outlier or other hospital-specific adjustment, so it is not what any hospital is paid; price it at a hospital for that.

FY2027 national base payment across the severity levels of MS‑DRG 321
MS‑DRG	Severity	Payment ($)	Step ($)
321	with MCC	20,050.90	—
322	without MCC	13,109.18	−6,941.72

FY2027 inpatient rates: what else changed on October 1 · Price MS‑DRG 321 at a hospital

Paid per case, by state

MS‑DRG 321 by state, 2024
State	Paid per case	Discharges	Hospitals	Charges ÷ paid
California	$30,388	2,479	103	8.3×
New York	$28,658	1,505	46	6.0×
Hawaii	$28,575	81	4	4.7×
Massachusetts	$28,542	762	18	4.3×
District of Columbia	$27,901	81	2	5.4×
Maryland*	$27,770	606	22	1.2×
Alaska	$27,699	112	4	8.8×
Connecticut	$27,524	250	9	4.9×
Wyoming	$27,351	38	2	5.3×
Oregon	$25,444	377	13	4.5×
New Jersey	$25,115	984	35	7.9×
New Hampshire	$23,921	241	7	6.0×
Maine	$23,743	134	2	6.2×
Rhode Island	$23,732	126	4	4.5×
Delaware	$23,193	131	3	5.3×
Minnesota	$23,111	595	15	5.3×
Nevada	$22,780	302	10	13.6×
Washington	$22,674	627	21	6.6×
Arizona	$22,263	647	28	8.7×
New Mexico	$21,788	169	7	7.5×
Pennsylvania	$21,509	1,154	50	8.0×
Idaho	$21,295	187	7	6.5×
Illinois	$21,225	1,184	49	6.7×
Colorado	$20,917	390	18	9.8×
South Dakota	$20,802	188	4	6.5×
Montana	$20,727	131	4	4.2×
Wisconsin	$20,713	560	23	5.1×
Michigan	$20,711	977	35	5.3×
Utah	$20,667	220	6	6.7×
North Dakota	$20,453	161	5	4.6×
Georgia	$20,447	816	33	7.8×
North Carolina	$20,395	854	25	6.0×
Indiana	$20,154	779	31	7.6×
South Carolina	$20,072	617	19	8.9×
Florida	$20,007	2,484	92	10.7×
Virginia	$19,962	950	31	8.0×
West Virginia	$19,959	407	13	6.9×
Texas	$19,955	2,098	86	10.1×
Ohio	$19,885	1,338	50	6.4×
Missouri	$19,666	785	36	7.0×
Kansas	$19,531	345	13	8.8×
Kentucky	$19,144	585	19	8.3×
Iowa	$19,125	465	16	5.4×
Tennessee	$18,408	656	23	8.2×
Nebraska	$18,017	174	8	6.2×
Arkansas	$17,925	472	18	6.2×
Louisiana	$17,846	379	16	8.9×
Oklahoma	$17,834	550	16	6.9×
Mississippi	$17,738	352	14	8.8×
Alabama	$17,529	448	20	9.7×
Vermont	$13,087	46	1	8.3×
United States	$22,191	30,999	1,136	7.4×

* Maryland hospitals are paid under the state’s all-payer model, not the IPPS, so Maryland is left out of the state range above.

How much hospitals vary

Each hospital’s own average Medicare payment for MS‑DRG 321.

10th percentile	$17,172
25th percentile	$18,523
Median hospital	$20,691
75th percentile	$24,046
90th percentile	$29,262

Related analysis

DRG validation and the single-MCC claim: when one code moves the payment · Payment integrity

The same condition at other severities

322Percutaneous Cardiovascular Procedures with Intraluminal Device without MCC · $12,905

Nearby MS‑DRG numbers

Questions

What did Medicare pay for MS‑DRG 321 in 2024?

An average of $22,191 per discharge across 30,999 fee-for-service discharges at 1,136 hospitals, $687.9M in total.

Which state paid the most for MS‑DRG 321?

California, at $30,388 per case; Vermont paid the least, $13,087.

Where do these figures come from?

From the Medicare Inpatient Hospitals - by Provider and Service (data year 2024): the published hospital-by-DRG averages of Medicare fee-for-service inpatient discharges in 2024. Cells with fewer than 11 discharges are not published, so a hospital with a handful of cases is not counted. Average Medicare payment excludes the patient’s deductible and coinsurance.