Modifier JW
HCPCS modifier indicating drug amount discarded from a single-use vial or single-use package.
1 min read · Last reviewed May 23, 2026
At a glance
- Category
- Billing
- Primary sources
- 1
- Workspace handoff
- revenue audit →
Where this comes up
This shows up in revenue-cycle work — claim scrubbing, charge entry, posting, A/R follow-up, and month-end close. Billers and practice managers hit this term when reconciling a payment, working a denial queue, or auditing why a claim aged past 60 days.
Full definition
What it is in practice
CMS requires JW for documented waste from a single-use vial. The administered units bill on one line; the wasted units bill on a second JW line.
How it shows up in your practice
Document the waste in the chart with vial size, administered amount, and discarded amount. Audit waste patterns periodically.
Sources
- CMS — HCPCS Level IIhttps://www.cms.gov/medicare/coding-billing/healthcare-common-procedure-system-hcpcs-level-ii-coding-procedures
Audit JW reporting in Revenue Audit
Open revenue audit →Related terms
D3rx is a healthcare-billing and compliance research aid maintained by D3rx Inc. Articles are drafted by an LLM (Anthropic Claude) against primary HHS, OCR, CMS, eCFR, NIST, and state-regulator publications, and reviewed for restraint and source fidelity by the D3rx team.
Reviewer status: a named credentialed reviewer (CHC, CHPC, or healthcare attorney) is being engaged. Until that engagement is finalized, this page does not claim credentialed review.
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This glossary entry is a research aid for billing and compliance staff. It does not provide legal, medical, or financial advice and does not replace counsel. References cited link to primary sources at HHS, OCR, CMS, eCFR, NIST, and the relevant payer or industry body.