No. Q9958 is a HCPCS Level II code, maintained by CMS, that identifies the drug supplied. CPT codes are five-digit numbers from the AMA that describe services. Giving the drug, for example an injection or infusion, is usually reported with a separate CPT administration code.

What is the Medicare payment limit for Q9958?

$0.08 per 1 ml, effective October 1, 2026 through December 31, 2026, from CMS's Part B drug payment limit file. Multiply by the units billed for the allowed amount before deductible and coinsurance. It is not a coverage decision.

Q9958 HCPCS Code: High osmolar contrast material

Q: What NDCs are billed under Q9958?

CMS's ASP crosswalk for October 1, 2026 through December 31, 2026 lists 4 NDCs under Q9958, for Cysto-Conray Ii, Cystografin and Cystografin-Dilute. The table on this page shows each one with its billing units per package.

In short

Q9958 is the HCPCS Level II code for high osmolar contrast material, up to 149 mg/ml iodine concentration, per ml. CMS assigns NDCs for Cysto-Conray Ii, Cystografin and Cystografin-Dilute to it. The Medicare Part B payment limit is $0.08 per unit (October 1, 2026 through December 31, 2026).

Code

CMS HCPCS file

HCPCS codeQ9958

Billing unitSee descriptor

Descriptor: High osmolar contrast material, up to 149 mg/ml iodine concentration, per ml
Short descriptor: Hocm <=149 mg/ml iodine, 1ml
Code set: HCPCS Level II, maintained by CMS
Effective: Jul 1, 2005

Medicare Part B payment limit

CMS ASP file

Payment limit per unit$0.08

Per1 ml

Coinsurance20%

Effective October 1, 2026 through December 31, 2026. Payment allowance limits subject to the ASP methodology are based on 2Q26 ASP data. A payment limit is not a coverage decision; the Medicare contractor decides coverage. CMS ASP pricing files

Units and claim line

Enter the dose to get the units and the NDC line for the CMS-1500 and the 837P.

HCPCS units

Modifier

NDC (11-digit)

NDC unit qualifier

NDC quantity

Enter the units to build the claim line.

NDCs billed under Q9958

CMS’s ASP NDC–HCPCS crosswalk (effective October 1, 2026 through December 31, 2026) assigns 4 NDCs to Q9958 for Cysto-Conray Ii, Cystografin and Cystografin-Dilute. Billing units per package are CMS’s figures for this code’s unit.

NDCs assigned to Q9958 in the CMS ASP crosswalk
Drug	NDC (11-digit)	Labeler	Package	Billing units per package
Cysto-Conray Ii	00019-0862-50	Liebel-Flarsheim Company LLC	12 × 250	3,000
Cystografin	00270-0149-57	Bracco Diagnostics Inc.	10 × 300	3,000
Cystografin	00270-0149-60	Bracco Diagnostics Inc.	10 × 100	1,000
Cystografin-Dilute	00270-1410-30	Bracco Diagnostics Inc.	10 × 300	3,000

Q9958: common questions

Is Q9958 a CPT code?: No. Q9958 is a HCPCS Level II code, maintained by CMS, that identifies the drug supplied. CPT codes are five-digit numbers from the AMA that describe services. Giving the drug, for example an injection or infusion, is usually reported with a separate CPT administration code. CPT codes for drug administration.
What NDCs are billed under Q9958?: CMS's ASP crosswalk for October 1, 2026 through December 31, 2026 lists 4 NDCs under Q9958, for Cysto-Conray Ii, Cystografin and Cystografin-Dilute. The table on this page shows each one with its billing units per package.
What is the Medicare payment limit for Q9958?: $0.08 per 1 ml, effective October 1, 2026 through December 31, 2026, from CMS's Part B drug payment limit file. Multiply by the units billed for the allowed amount before deductible and coinsurance. It is not a coverage decision.

Q9958 — High osmolar contrast material, up to 149 mg/ml iodine concentration, per ml