1.5 Regulatory Agencies, Professional Standards & Population Health Concepts

Key Takeaways

  • HHS is the parent federal department; CMS administers Medicare and Medicaid, OCR enforces HIPAA, and ASTP/ONC governs health IT certification and information blocking.
  • The Joint Commission is a voluntary accreditor whose National Patient Safety Goals and Do Not Use list carry contractual and deemed-status weight rather than statutory force.
  • SNOMED CT encodes clinical concepts, LOINC encodes observations, RxNorm encodes medications, ICD-10-CM encodes diagnoses, and CPT/HCPCS encode procedures and supplies.
  • Population health uses aggregated EHR data to measure outcomes across a defined group rather than one patient at a time.
  • Social determinants of health are captured with ICD-10-CM Z-codes in the Z55-Z65 range and feed both care management and population health analytics.
Last updated: August 2026

The CEHRS test plan names three core knowledge areas that sit above the individual domains: health care regulatory agencies and their relevance to EHR practice (CK1), professional standards related to EHR practice (CK2), and population health concepts (CK13). Getting the agencies straight prevents a common exam error — attributing a rule to the wrong body.

Who Regulates What

BodyTypeWhat It Does That Touches the EHR
HHS (Dept. of Health & Human Services)Federal departmentParent agency; issues the HIPAA rules
CMS (Centers for Medicare & Medicaid Services)HHS agencyAdministers Medicare/Medicaid; sets Conditions of Participation, the Quality Payment Program, Promoting Interoperability, and NCCI edits; maintains HCPCS Level II and co-maintains ICD-10-CM
OCR (Office for Civil Rights)HHS officeEnforces the HIPAA Privacy, Security, and Breach Notification Rules; runs audits; assesses civil monetary penalties
ASTP/ONCHHS officeAssistant Secretary for Technology Policy / Office of the National Coordinator for Health IT; runs the Health IT Certification Program and administers the information blocking regulations
OIG (Office of Inspector General)HHS officeInvestigates fraud and abuse; enforces information blocking penalties against health IT developers and networks
FDAHHS agencyRegulates drugs, devices, and certain clinical decision support software
CDCHHS agencyPublishes ACIP immunization schedules, Vaccine Information Statements, and public health reporting specifications
NCHSCDC centerCo-maintains ICD-10-CM with CMS
DEADept. of JusticeRegulates controlled substances and EPCS requirements
OSHADept. of LaborBloodborne pathogen standard; employee exposure record retention
The Joint Commission (TJC)Private accreditorNational Patient Safety Goals, Do Not Use list, record completion standards; accreditation can confer CMS "deemed status"
NCQAPrivate accreditorHEDIS measures; patient-centered medical home recognition
State health departments and licensing boardsStateLicensure, reportable disease requirements, state record retention statutes, minor consent laws

The distinction that matters most on the exam: OCR enforces HIPAA; ASTP/ONC and OIG handle information blocking; CMS handles payment and participation. A scenario about withholding lab results from a portal is an information blocking question, not an OCR privacy question, even though both involve health records.

Professional Standards and Standard Vocabularies

Core knowledge statement CK2 lists the standards a specialist works under: CMS rules, HIPAA, HITECH, Meaningful Use/Quality Payment Program, and SNOMED CT. In practice, the specialist encounters a family of code systems, and mixing them up is a frequent error.

StandardOwnerEncodesWhere You See It
SNOMED CTSNOMED InternationalClinical concepts, findings, proceduresProblem list entries
LOINCRegenstrief InstituteLaboratory and clinical observationsLab orders and results
RxNormNational Library of MedicineNormalized medication namesMedication and allergy lists
CVXCDCVaccines administeredImmunization records
ICD-10-CMNCHS and CMSDiagnosesClaims, medical necessity
CPTAmerican Medical AssociationProcedures and servicesClaims
HCPCS Level IICMSSupplies, drugs, DMEClaims
HL7 v2, C-CDA, FHIRHL7 InternationalMessage and document exchangeInterfaces
NCPDP SCRIPTNCPDPPrescription transactionse-Prescribing
X12 EDIASC X12Eligibility, claims, remittance270/271, 837, 835, 278

A useful mnemonic: SNOMED describes, ICD classifies, CPT bills, LOINC observes, RxNorm prescribes.

Population Health Concepts

Population health shifts the unit of analysis from the individual patient to a defined group — every diabetic patient in a practice, every Medicare beneficiary attributed to an accountable care organization, every resident of a county during a disease outbreak. The EHR supports it in three ways:

  1. Registries and cohorts. The system identifies all patients meeting criteria (for example, all adults 45-75 with no colorectal cancer screening on file) so outreach can be targeted.
  2. Care gap closure. Decision support flags the missing service at the point of care, and dashboards track closure rates across the population. Section 10.5 covers the reports that drive this.
  3. Risk stratification. Aggregated clinical, utilization, and social data ranks patients by likelihood of an adverse outcome so care management resources go where they matter.

Social determinants of health

Social determinants of health (SDOH) are the non-medical conditions that shape health outcomes: housing, food access, education, employment, transportation, and social support. They are captured in structured fields and coded with ICD-10-CM Z-codes in the Z55-Z65 range:

  • Z59.00 — Homelessness, unspecified
  • Z59.41 — Food insecurity
  • Z55.0 — Illiteracy and low-level literacy
  • Z56.0 — Unemployment, unspecified
  • Z60.2 — Problems related to living alone

Because SDOH data is entered by intake staff as often as by clinicians, EHR specialists are frequently the people who make population health analytics possible or impossible. Free-text notes about a patient's housing situation do not aggregate; a coded Z-code does.

Test Your Knowledge

A health system delays releasing finalized laboratory results to the patient portal for seven days as a matter of routine policy. Which agency's rules is this practice most directly evaluated against?

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B
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D
Test Your Knowledge

Which standardized vocabulary is used to encode entries on an EHR problem list?

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B
C
D
Test Your Knowledge

A practice wants to identify every patient whose care is affected by food insecurity so a community referral program can reach them. What is the correct documentation approach?

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B
C
D
Test Your Knowledge

The Joint Commission publishes the National Patient Safety Goals and the Do Not Use abbreviation list. What is the legal nature of these requirements?

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B
C
D