- The Number: 75% on a 90-Question Exam
- What 75% Means in Practice
- How the Three Domains Carry Your Score
- Open-Book Rules That Protect (or Sink) Your Score
- What the Questions Look Like
- Who Sets the Standard: BMSC and AHCC
- Fees, Retakes, and the 90-Day Window
- A Domain-Weighted Study Sequence
- After You Pass: Keeping the Credential
- Frequently Asked Questions
- The HCS-H passing score is 75% on a 90-question, 3-hour, open-book exam.
- Diagnosis coding is 75% of the blueprint, so Domain 1 largely decides whether you pass.
- Only one approved hard-copy ICD-10-CM manual plus AHCC-watermarked FY2027 guidelines are allowed; electronic lookups are prohibited.
- Retakes cost $99 each within 90 days of your previous attempt, versus $339 for the initial exam.
The Number: 75% on a 90-Question Exam
The Home Care Coding Specialist - Hospice (HCS-H) exam has one headline requirement: you must score 75% to pass. The test contains 90 multiple-choice questions, many built around hospice coding scenarios, and you have 3 hours to complete it. The Association of Home Care Coding & Compliance (AHCC), a credentialing, education and training division of DecisionHealth, LLC, administers the credential, and its Candidate Handbook and exam information pages are the authoritative sources for scoring rules.
That sounds simple, but a passing percentage means different things depending on the exam's structure. On this exam, three features shape how you should interpret 75%: the heavy weighting toward diagnosis coding, the open-book format with strict reference rules, and the scenario-driven question style. This article walks through each so you know what the number demands in practice.
If you are still deciding whether to sit for the exam at all, start with What Is HCS-H Certification? and the HCS-H requirements guide for eligibility details.
What 75% Means in Practice
The published passing score is 75%, and the exam has 90 questions. Applied directly to 90 items, 75% works out to roughly 68 correct answers (67.5 rounded up). Treat that as a planning target rather than a guaranteed cut line: AHCC's published materials state the percentage, and you should not assume any particular scaling or item-weighting beyond what the issuer documents. The safe approach is to aim comfortably above 68 correct so that a handful of tricky scenario questions cannot decide your result.
Because the exam is open-book, a 75% threshold is not a memory test. It is a test of whether you can locate and apply the right ICD-10-CM convention, guideline, or sequencing rule quickly and accurately under a 3-hour clock. Candidates who fail an open-book coding exam usually do not fail for lack of references; they fail because they cannot navigate them efficiently or misapply a convention.
How the Three Domains Carry Your Score
The official blueprint, published in the Candidate Handbook (HCS-D, HCS-H, HCS-O) and current as of October 2026, divides the HCS-H exam into three domains. The weighting is lopsided, and understanding it is the single most useful thing you can do to protect your score.
| Domain | Weight | Approximate share of 90 questions |
|---|---|---|
| Domain 1: Assign accurate diagnosis codes | 75% | About 67 questions |
| Domain 2: Conduct documentation reconciliation | 15% | About 13-14 questions |
| Domain 3: Ensure that all activities are done in a legal and ethical manner that supports agency policy, regulatory and professional guidelines | 10% | About 9 questions |
The question-count column is a simple proportional estimate from the published weights, not an issuer-published item count. Notice what the arithmetic implies: Domain 1 alone represents roughly the same number of questions as the entire passing threshold. If you scored perfectly on Domains 2 and 3 but struggled on diagnosis coding, you could still fall short. Conversely, a strong Domain 1 performance gives you a large cushion against weaker results elsewhere.
Domain 1: Assign accurate diagnosis codes (75%)
This is where the exam is won or lost. Expect hospice coding scenarios that require you to select and sequence ICD-10-CM codes correctly using the FY2027 code set and guidelines.
- ICD-10-CM coding conventions: Alphabetic Index versus Tabular List, "Excludes1" and "Excludes2" notes, "code first" and "use additional code" instructions
- Terminal-diagnosis sequencing, a topic the issuer's study guide highlights specifically
- Applying the ICD-10-CM Official Coding Guidelines and AHA Coding Clinic guidance effective October 1, 2026
- Comfort with the clinical background the handbook strongly recommends: anatomy, physiology, medical terminology, pathophysiology and pharmacology
Domain 2: Conduct documentation reconciliation (15%)
These questions test whether you can compare clinical documentation against coded diagnoses and spot gaps or conflicts.
- Recognizing when documentation does or does not support a diagnosis
- Identifying when clarification or a query is warranted rather than assuming
- Reconciling information across sources in the record
Domain 3: Legal and ethical activities (10%)
The smallest domain, but not one to skip. These questions center on compliance, agency policy, regulatory requirements and professional guidelines, including coding ethics.
- Applying CMS regulations to coding practice
- Ethical coding behavior and professional standards
- Aligning daily coding activity with agency policy
For a deeper breakdown of each content area, see the complete guide to all three HCS-H exam domains.
Open-Book Rules That Protect (or Sink) Your Score
The exam is open-book, but the reference rules are specific and enforced. A noncompliant reference can be rejected by the proctor, which could leave you without the tool you planned around. According to AHCC's current examination rules:
- One approved hard-copy ICD-10-CM manual is allowed. A 2026 or 2027 edition is permitted, with 2027 recommended because the current exam uses FY2027 content.
- AHCC-watermarked FY2027 official guidelines are also permitted, linked from the issuer.
- Affixed alphabetical or tabular dividers and permitted annotations may be used, but notes must not reproduce coding rules or guidelines from other references.
- Post-it notes, loose reference papers and electronic lookups are prohibited, subject to the expressly permitted watermarked-guidelines exception.
- The proctor inspects your references and may reject anything that does not comply.
Your preparation should include rehearsing with the exact reference setup you will bring. If you tab and annotate your manual, do it within the permitted limits well before test day, and avoid writing out rules copied from other sources. Practicing under realistic conditions is covered further in the HCS-H study guide.
What the Questions Look Like
All 90 items are multiple choice, and the exam includes hospice coding scenarios. Rather than asking you to recite a guideline, scenario questions typically give you a patient situation or documentation excerpt and ask you to select the correct code, sequence, or action. That means the passing score reflects applied judgment.
Skills that tend to separate passing from failing on scenario items include:
- Reading the full scenario before reaching for the index. The relevant detail is often a single phrase about etiology, manifestation, or the terminal condition.
- Using the Tabular List to verify, never the Index alone. Selecting a code from the Alphabetic Index without confirming it in the Tabular List is a classic way to miss instructional notes.
- Honoring sequencing instructions. "Code first" and "use additional code" notes directly determine which answer choice is correct.
- Separating what is documented from what is assumed. Domain 2 questions in particular reward candidates who do not code beyond the documentation.
To gauge the difficulty of this format, read How Hard Is the HCS-H Exam? You can also build speed with scenario-style questions on the HCS-H practice test site.
Who Sets the Standard: BMSC and AHCC
The credential's governing body is the Board of Medical Specialty Coding and Compliance (BMSC). The current issuer and administrator is AHCC, which identifies HCS-H among the formerly BMSC credentials. When you are verifying scoring rules, blueprint weights, or fee details, go to AHCC's published pages and the Candidate Handbook rather than relying on third-party summaries, some of which may be outdated or may confuse this credential with other certifications that share the same abbreviation. To clarify the name itself, see What Does HCS-H Stand For?
One honest caveat belongs here. AHCC's reviewed sources state the 75% passing score but do not publish a verified cohort pass rate. If you see a specific pass-rate percentage quoted elsewhere, ask for its source. Our HCS-H pass rate analysis explains what can and cannot be said from the available data.
Fees, Retakes, and the 90-Day Window
Understanding the cost structure matters because the passing score has direct financial consequences if you need a second attempt.
| Item | Cost or Rule |
|---|---|
| Initial application and examination | $339 USD, includes one year of complimentary AHCC membership |
| Retake | $99 per attempt, within 90 days of the initial or previous examination |
| Annual renewal | $229 |
| Testing authorization | Lasts 90 days after registration |
| Sales tax | May apply |
The retake pricing is notably gentler than the initial fee, but it comes with a deadline: the $99 rate applies when you retake within 90 days of your initial or previous exam. Your initial testing authorization also lasts 90 days after registration, so schedule your exam date with that window in mind. See the HCS-H exam dates and scheduling guide for planning details and the full certification cost breakdown for the complete picture.
You can test at Prometric centers or remotely through ProProctor. Remote testing adds its own considerations, since unscheduled breaks do not pause the clock and your reference materials will still be inspected under the same rules.
A Domain-Weighted Study Sequence
Because Domain 1 carries 75% of the blueprint, your calendar should be weighted the same way. Here is one way to sequence preparation across roughly six weeks, adjusting for your experience. The issuer recommends two years of hospice coding experience and relevant clinical coursework or proficiency, but these are strongly recommended rather than mandatory, so candidates with less hands-on time should lean on the early weeks.
Domain 1 foundations
- Review ICD-10-CM conventions and the Official Coding Guidelines against your FY2027 manual
- Refresh pathophysiology and pharmacology for conditions common in hospice
- Tab your reference within the permitted rules
Domain 1 scenarios and terminal-diagnosis sequencing
- Work scenario questions daily and time yourself at about two minutes each
- Drill sequencing instructions and Coding Clinic guidance
- Log every miss by convention, not just by code
Domains 2 and 3
- Practice reconciling documentation against coded diagnoses
- Review CMS regulations, ethics and agency-policy scenarios
Full-length simulation
- Complete a timed 90-question run with only permitted references
- Target comfortably above 68 correct answers
The issuer's 2027 study guide, published August 21, 2026, covers coding conventions, terminal-diagnosis sequencing and coding ethics. Note that it supports preparation but does not replace or expand the official three-domain blueprint, so keep the blueprint as your master checklist. A one-page recap is available in the HCS-H cheat sheet.
Key Takeaway
Spend roughly three-quarters of your study hours on Domain 1, mirroring its blueprint weight, but never zero out Domains 2 and 3. Their combined 25% is easily enough to separate a pass from a fail when your diagnosis coding is solid but not flawless.
After You Pass: Keeping the Credential
Clearing 75% is the first milestone; maintaining the credential is the ongoing one. Recertification is annual and requires 20 CEUs. Ten come from accepted educational activities, and ten come from two mandatory hospice coding self-assessments, each containing 15 questions and worth 5 CEUs. At least 80% of all CEUs must relate to HCS-H examination domains, a rule set out in the handbook's Appendix A.
If your credential expires, you get a 90-day inactive grace period with a 15% late fee. If renewal is still incomplete after that, the credential is revoked. Annual renewal costs $229, so budget for it alongside your CEU planning.
Employers in the home health and hospice space value this credential as evidence of hospice-specific coding competence. If you are weighing the return, explore HCS-H jobs, the salary guide and the ROI analysis.
Frequently Asked Questions
The passing score is 75% on a 90-question multiple-choice exam with a 3-hour time limit. On 90 items, that works out to roughly 68 correct answers, so aim above that margin rather than at it.
Yes, with limits. You may use one approved hard-copy 2026 or 2027 ICD-10-CM manual (2027 recommended) and AHCC-watermarked FY2027 official guidelines. Electronic lookups, Post-it notes and loose reference papers are prohibited, and the proctor may reject noncompliant references.
A retake costs $99 per attempt when taken within 90 days of the initial or previous examination. The initial application and exam fee is $339, and sales tax may apply.
Domain 1, Assign accurate diagnosis codes, which makes up 75% of the blueprint. Domain 2 (documentation reconciliation) is 15% and Domain 3 (legal and ethical activities) is 10%.
A cohort pass rate was not verified in the issuer sources reviewed, so no reliable figure can be cited here. The only verified threshold is the 75% passing score. Practice with realistic scenario questions at the HCS-H practice test site to measure your own readiness.