How much does Medicare pay for HCPCS Q0112?

Medicare allowed an average of $5.67 per service and paid $5.67 of that, the balance being the patient's coinsurance and deductible (2024 data). Providers submitted an average of $23.31, which is what they billed rather than what they received — Medicare pays its fee schedule regardless of the charge.

What is HCPCS code Q0112?

All potassium hydroxide (koh) preparations. It was billed 8,384 times to 7,432 Medicare beneficiaries by 388 providers in 2024.

Which specialty bills Q0112 most?

Dermatology, with 5,266 services from 250 clinicians. Next are Physician Assistant, Nurse Practitioner, Obstetrics & Gynecology.

HCPCS Q0112

All potassium hydroxide (koh) preparations

$5.67Medicare-allowed amount per service, averaged across 8,384 services

Providers submitted

$23.31

Asking price, not received

Medicare allowed

$5.67

The fee schedule figure

Medicare paid

$5.67

Balance is patient coinsurance

Providers submitted an average of $23.31 for this code and Medicare allowed $5.67 — 4.1× less. That gap is normal and means nothing on its own: Medicare pays its fee schedule regardless of what is billed, so the submitted figure describes a hospital chargemaster, not a price anyone paid. Of the allowed amount Medicare paid $5.67 (100%); the rest is the patient’s coinsurance and deductible.

Services: 8,384
Beneficiaries: 7,432
Providers billing it: 388
Total allowed: $47,537

What Medicare pays for HCPCS Q0112

Across 8,384 services billed by 388 providers to 7,432 beneficiaries, Medicare allowed an average of $5.67 per service. The allowed amount is the figure that matters: it is what Medicare and the patient together owe, set by the fee schedule and adjusted for local practice costs. What a provider chose to submit has no bearing on it.

Who bills Q0112

Specialty	Services	Beneficiaries	Avg allowed	Providers
Dermatology	5,266	4,695	$5.66	250
Physician Assistant	1,379	1,227	$5.70	72
Nurse Practitioner	818	735	$5.70	36
Obstetrics & Gynecology	805	668	$5.68	23
Family Practice	28	28	$5.71	1
Pathology	23	23	$5.71	2
Clinical Laboratory	20	19	$5.71	1
Internal Medicine	17	15	$5.71	1
Certified Nurse Midwife	17	11	$5.71	1
General Practice	11	11	$5.71	1

Q0112 reimbursement by state

Two different numbers. Allowed is what Medicare actually allowed in that state, which includes the local practice-cost adjustment. Standardized strips that geographic adjustment out of the payment, so it is the column to use when comparing states — a difference there reflects how the code was billed, not what it costs to run a practice locally.

State	Services	Allowed	Standardized pmt	Providers
California	755	$5.60	$5.71	39
Texas	710	$5.70	$5.71	30
Florida	648	$5.69	$5.71	32
Massachusetts	528	$5.69	$5.71	23
Georgia	526	$5.62	$5.71	19
South Carolina	516	$5.66	$5.71	19
New York	497	$5.66	$5.71	15
North Carolina	483	$5.70	$5.71	24
Missouri	382	$5.68	$5.71	17
Pennsylvania	328	$5.69	$5.71	11
Tennessee	278	$5.67	$5.71	13
Iowa	235	$5.69	$5.71	14
Mississippi	222	$5.66	$5.71	9
Virginia	212	$5.71	$5.71	13
Washington	174	$5.68	$5.71	11
Oregon	173	$5.71	$5.71	6
Arizona	166	$5.71	$5.71	8
Michigan	152	$5.71	$5.71	7
Arkansas	146	$5.71	$5.71	7
Maryland	126	$5.71	$5.71	7
Illinois	123	$5.66	$5.71	9
Nebraska	112	$5.66	$5.71	5
Louisiana	105	$5.67	$5.71	5
Kentucky	93	$5.71	$5.71	6
Indiana	82	$5.71	$5.71	4
New Jersey	68	$5.63	$5.71	2
Kansas	64	$5.71	$5.71	4
Hawaii	55	$5.19	$5.71	3
Idaho	54	$5.71	$5.71	3
Colorado	51	$5.71	$5.71	3
New Mexico	48	$5.71	$5.71	2
Wyoming	41	$5.71	$5.71	3
Alabama	37	$5.71	$5.71	2
Ohio	34	$5.71	$5.71	2
Connecticut	28	$5.71	$5.71	1
Delaware	26	$5.71	$5.71	2
West Virginia	16	$5.71	$5.71	1
New Hampshire	15	$5.71	$5.71	1
Maine	13	$5.71	$5.71	1
Rhode Island	13	$5.71	$5.71	1
Oklahoma	13	$5.60	$5.71	1
Wisconsin	13	$5.71	$5.71	1
Alaska	12	$5.71	$5.71	1
Montana	11	$5.71	$5.71	1

Related codes

Q0138Injection, ferumoxytol, for treatment of iron deficiency anemia, 1 mg$0.35
Q0111Wet mounts, including preparations of vaginal, cervical or skin specim$16.85

Billing this code is not the same as earning it

An allowed amount is revenue to a practice, not income to a clinician. It funds staff, premises, equipment and supplies before anyone is paid. What clinicians actually earn is published separately by the Department of Labor, and what industry pays them is published separately again by CMS — this site carries both.

What doctors are paid →·Look up a clinician →·All procedure codes →

Where this comes from. CMS Medicare Physician & Other Practitioners, by Provider and Service, 2024. It covers fee-for-service Original Medicare Part B only — not Medicare Advantage, not Medicaid, and not commercial insurance, which typically pays more for the same code.

How it is averaged. CMS publishes one average per provider per code. Every figure here is re-weighted by the number of services, so a clinician who billed the code 4,000 times counts 4,000 times more than one who billed it twice. CMS also suppresses any provider-code pair with fewer than 11 beneficiaries, so low-volume practice is missing from these totals by design.