Coding at a Glance

CMS cross-references: 1 related code

Medicare Coverage & Payment

CMS short descriptor: Injection, argatroban
Medicare coverage: Special coverage instructions apply (CMS coverage code D)
Pricing indicator: 53
BETOS: O1E — Other drugs
Last CMS action effective: January 1, 2017
Terminated: December 31, 2016

Source: CMS HCPCS Level II release. Coverage codes indicate how Medicare treats the code, not whether a specific claim will be paid; payer policy and documentation still govern.

Code Set: Removed from the code set — not valid on or after January 1, 2017.

Related Codes

CMS cross-reference: code to use instead

The CMS HCPCS Level II code set carries an explicit cross-reference from this code (deleted or not valid for Medicare) to this code. A cross-referenced code can itself have been retired since; a terminated target is marked.

J0883 — Injection, argatroban, 1 mg (for non-esrd use)

Contextual Map

Every relationship of C9121 in one view: hierarchy, official tabular instructions in both directions, clinical classification, risk adjustment, MS-DRG participation, index terms and change history — each edge carrying the CMS source it derives from.

Nearest codes (40)

C9101 — Injection, oliceridine, 0.1 mg[Sibling]— CMS HCPCS Level II code set
C9113 — Injection, pantoprazole sodium, per vial[Sibling]— CMS HCPCS Level II code set
C9122 — Mometasone furoate sinus implant, 10 micrograms (sinuva)[Sibling]— CMS HCPCS Level II code set
C9132 — Prothrombin complex concentrate (human), kcentra, per i.u. of factor ix activity[Sibling]— CMS HCPCS Level II code set
C9133 — Factor ix (antihemophilic factor, recombinant), rixubis, per i.u.[Sibling]— CMS HCPCS Level II code set
C9134 — Factor xiii (antihemophilic factor, recombinant), tretten, per 10 i.u.[Sibling]— CMS HCPCS Level II code set
C9135 — Factor ix (antihemophilic factor, recombinant), alprolix, per i.u.[Sibling]— CMS HCPCS Level II code set
C9136 — Injection, factor viii, fc fusion protein, (recombinant), per i.u.[Sibling]— CMS HCPCS Level II code set
and 32 more

CMS cross-reference

J0883 — Injection, argatroban, 1 mg (for non-esrd use)[Cross-referenced to]— CMS HCPCS Level II code set (cross-reference field) · JUL2026

Change history (2)

January 1, 2017 — Removed from the code set [Change history]— CMS release files (code change ledger)
and 1 more

Sources for this page

Codes, titles, notes, index terms and mappings on this page are transcribed from the datasets below. Relationships MedCoder computed and text MedCoder wrote are labelled where they appear.

Code, descriptors, coverage and pricing attributes Official source data: CMS HCPCS Alpha-Numeric (ANWEB) release — July 2026 quarterly update Release, file and checksum · Publisher’s page
Change history and date-of-service validity Official source data: CMS HCPCS quarterly update files, ingested into the change ledger Release, file and checksum · Publisher’s page
Comparisons, relationships and the contextual map MedCoder structured relationship: Computed by MedCoder from the tabular notes and tables above; every derived relationship is marked as derived where it appears
Summary and FAQ answers MedCoder explanation: Written by MedCoder to explain the sources above: drafted with AI assistance, checked by a person against the release files, and labelled as MedCoder text where it appears. Not official text.

Labels on this page: Official source data · MedCoder structured relationship · MedCoder explanation. How to read the labels · All data sources and release dates

Change history

January 1, 2017
Removed from the code set
Injection, argatroban, per 5 mg
January 1, 2003
Added to the code set
Injection, argatroban, per 5 mg

Nearest Codes in This Family

Official HCPCS Level II classifications closest to C9121 in its code family, with their registry titles.

C9121 HCPCS Level II Code: Injection, argatroban, per 5 mg