What Is DICO-C Certification?

What the DICO-C Credential Actually Is

DICO-C is the abbreviation for Certified Designated Infection Control Officer. It is a specialty certification for emergency responders who carry, or may soon carry, responsibility for infection control inside a fire, EMS, law enforcement, or other public safety organization. If you have been searching for the designated infection control officer certification that fits that world, this is the one: a credential built around the practical duties of the person an agency relies on when a communicable-disease exposure occurs.

The acronym is worth pinning down because several other credentials in the wider certification landscape abbreviate similarly. Everything on this page, and everything on this site, concerns the infection-control-officer credential specifically. Fees, exam structure, domain weights, and renewal rules described here belong to the Certified Designated Infection Control Officer program and nowhere else. For other angles on the same topic, our short explainers cover what DICO-C stands for and the meaning of DICO-C, while this article goes deeper into how the certification works from application through renewal.

Who Stands Behind It: IBSC and NAPSICO

The credential is issued by the International Board of Specialty Certification (IBSC) and was developed with the National Association of Public Safety Infection Control Officers (NAPSICO). That pairing matters. NAPSICO brings the subject-matter community of people who actually perform infection control duties in public safety agencies, while IBSC administers the certification program: the candidate handbook, exam delivery, recertification rules, and the retest policy.

In practice this means you will interact with both organizations. NAPSICO membership affects what you pay for the exam, and NAPSICO publishes an optional study guide. IBSC controls your application approval, your exam authorization, and your renewal. The primary reference documents are the IBSC DICO-C Candidate Handbook (April 2026) and the IBSC FAQ and recertification guidelines, and anything those documents say overrides secondhand summaries, including this one.

Who the Credential Is Built For

The eligibility language is intentionally broad: an emergency responder who is working as, or has the potential to work as, an Infection Control Officer. Candidates also need an approved examination application and government-issued identification. You do not need to already hold the title to sit for the exam, which is why the credential appeals to both current designated officers and responders positioning themselves for the role.

One distinction trips people up. Certification eligibility is not the same as employer appointment requirements. Your department may require specific courses, a minimum time in service, or a formal designation before it names you its infection control officer. Those are local conditions. They are separate from what IBSC requires to approve your exam application. Our DICO-C requirements guide walks through how to keep those two layers straight when planning your path.

Inside the Exam: Format, Timing, and Question Style

The numbers

The test is computer-delivered and consists of 125 administered questions in 2 hours 30 minutes. Of those, 100 are scored and 25 are unscored pilot items that IBSC uses to evaluate future questions. You will not be told which are which, so treat every question as if it counts. Every item is four-option, single-best-answer multiple choice, with applied and scenario-based content throughout.

How the conditions affect strategy

The exam is closed-book and identity-checked. No notes, books, outside assistance, or unauthorized electronics are permitted, and remote sessions are monitored by audio and video. Because the handbook allows you to move backward and forward and change answers, a sound approach is to move steadily through the exam, flag anything that stalls you, and return with the remaining time. With 125 items in 150 minutes you have roughly a minute and a few seconds per question, which is comfortable for well-prepared candidates but unforgiving if you linger on a single scenario.

Accommodations are available when you provide supporting documentation and receive approval, so start that process early rather than the week of your exam. For a candid look at how demanding the content feels, see how hard the DICO-C exam is.

The Five Content Domains

The blueprint reference is the April 2026 candidate handbook, along with a separately linked detailed outline dated October 7, 2020. The domains and weights below come from that blueprint. For a deeper breakdown of each area, read the full DICO-C exam domains guide.

Passing Score and What It Means

According to the IBSC DICO-C FAQ, passing requires 70 correct answers among the 100 scored items. That is the figure to work from. It should not be calculated against all 125 administered questions, since the 25 pilot items do not count toward your result. Mentally, you are aiming for 70 correct out of the 100 questions that carry weight, while not knowing which 100 they are.

Because the 70-of-100 threshold is fixed, your preparation target should sit comfortably above it, particularly in the 30% exposure control plan domain, where a weak performance is hard to offset elsewhere. Our passing score breakdown explains how to translate the requirement into practice-test benchmarks, and the pass rate article discusses what is and is not publicly known about outcomes.

Fees, Booking, and Proctoring

What you pay

Exam fees are $300 for NAPSICO members and $400 for nonmembers, and fees are nonrefundable. NAPSICO also offers an optional study guide for $35. That produces calculated subtotals of $335 for members or $435 for nonmembers when you purchase the exam plus the guide. Those subtotals exclude membership dues, applicable tax or shipping, any courses you choose to take, and retake fees. If you are weighing whether NAPSICO membership pays for itself, remember the member discount is $100 on the exam alone, so compare that against the cost of dues. A full pricing walkthrough is in our DICO-C certification cost breakdown.

How the exam is delivered

Provider details are a place where candidates get confused, because different pages reference different vendors. The April 2026 handbook specifies TesTrac live remote proctoring, while IBSC and NAPSICO web pages also mention Prometric. The safest rule: follow the provider and delivery modality named in your own current IBSC authorization when you book. Do not rely on an older page or a forum post. For scheduling logistics, see DICO-C exam dates and scheduling.

If you do not pass

A retest requires new registration, the full exam fee, and at least 30 days after your previous attempt. Under the standard retest rule you have three total attempts. Since fees are not discounted for retakes, a disciplined first-attempt plan is meaningfully cheaper than a casual one.

Keeping the Credential Current

DICO-C is valid for three years. You have two renewal routes: retake the examination, or complete 18 directly relevant infection-control continuing education hours during the certification cycle, maintain eligibility, submit completion documentation for audit, and pay the renewal fee.

Timing is where people get penalized. Submit your CE-renewal application two to four months before expiration. Documentation submitted less than 30 days before expiration carries a $125 processing fee. If the credential is allowed to expire, you must re-examine rather than renew by CE. Treat your expiration date as a project deadline and begin logging relevant CE early in the cycle instead of scrambling at the end. The IBSC Recertification Guidelines for DICO-C are the authoritative source for what counts as directly relevant.

Career Context and Pay Expectations

The people who typically pursue this credential are emergency responders in fire departments, EMS agencies, law enforcement, and similar public safety organizations, along with those who support them. The infection control officer role often sits alongside another primary job, so the certification frequently adds responsibility and credibility rather than defining a standalone career track. For a look at how the role shows up in postings, see DICO-C jobs.

On compensation, the honest framing is this: your pay is driven mainly by your underlying emergency-response or healthcare role, your rank or classification, and your employer, not by a guaranteed premium attached to the certification itself. Some employers may value or require the credential for a designated role; others will not change pay at all. When evaluating the investment, compare your own agency's pay structure and appointment practices rather than assuming a bump. Our salary guide and the is-it-worth-it analysis take that comparison approach.

Sequencing Your Preparation

Rather than a generic study calendar, build your schedule around the blueprint weights. Because Exposure Control Plan Components is 30% of the scored content and connects to every other domain, it makes sense to anchor it early and revisit it often. A reasonable sequence looks like this:

Use scenario-style DICO-C practice questions from the start, not just at the end, since the real exam is applied. A full-length DICO-C practice test in week six helps you rehearse the pacing and the closed-book conditions. For a fuller method, the DICO-C study guide lays out how to turn missed questions into targeted review, and the cheat sheet is useful as a final-week refresher once you have done the deeper work. If you want structured coursework alongside question practice, see our overview of DICO-C training options.

Frequently Asked Questions