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Back to Glossary

Domain

Clinical

EHR, ICD-10, LOINC, SNOMED CT, patient care and clinical documentation

16,027 clinical terms

Pulmonary EmbolismPE

Acute vascular condition coded as ICD-10 I26.x, representing a blood clot obstruction in the pulmonary arteries. Frequently flagged in EHR, claims, and risk adjustment systems as a high-acuity diagnosis. Data engineers use PE codes to identify high-risk members, trigger care management alerts, and support HCC risk score calculations in payer analytics platforms.

PulmonologyPULM

Medical specialty focused on respiratory system disorders including COPD, asthma, and pulmonary fibrosis, identified by specialty taxonomy codes in EHR, claims, and provider directory systems. Data engineers use PULM specialty flags to route respiratory claims, build chronic condition registries, and measure specialist referral patterns in population health platforms.

PyelonephritisPyelo

Clinical diagnosis abbreviation for bacterial kidney infection, coded via ICD-10 in EHR and medical claims systems. Used in utilization management, inpatient claims adjudication, and population health analytics to identify members with urinary tract complications requiring acute care.

RadiologyRAD

A clinical department and claims category encompassing diagnostic imaging services including X-ray, CT, MRI, ultrasound, and nuclear medicine, billed using CPT codes in the 70000 series. Radiology data flows through PACS, RIS, and EHR systems, and appears in professional and facility claims with modifiers indicating technical or professional component billing.

Range of MotionROM

A clinical measurement quantifying the degrees of movement achievable at a specific joint, documented in EHR systems during physical therapy, occupational therapy, and orthopedic encounters. ROM values are structured data in therapy outcome tracking systems and support longitudinal functional improvement analysis in rehabilitation data pipelines.

RectalPR

Abbreviation PR (per rectum) denotes the rectal route of administration for medications or clinical procedures. Used in EHR medication administration records, pharmacy dispensing systems, and clinical documentation to specify drug delivery route, impacting dosing logic and clinical decision support rules.

Red Blood CellRBC

Abbreviated RBC, refers to erythrocyte count or volume measurements captured in laboratory results within EHR and clinical data systems. Used in lab result integration pipelines to store complete blood count data, supporting diagnostic analytics, population health modeling, and clinical decision support workflows.

Reference Range Highref_range_high

The maximum value defining the upper boundary of the normal reference interval for a specific clinical laboratory test. Values above the reference range high are flagged as abnormal high in EHR systems using LOINC codes. Used in clinical decision support, population health analytics, and quality reporting programs.

Reference Range Lowref_range_low

The minimum value defining the lower boundary of the normal reference interval for a specific clinical laboratory test. Values below the reference range low are flagged as abnormal low in EHR systems using LOINC codes. Used in clinical decision support, population health analytics, and quality reporting programs.

Registered DietitianRD

A credentialed nutrition specialist whose provider type code and NPI appear in EHR, claims, and care management systems. Data engineers use RD provider records to classify nutrition-related encounters, link dietary intervention orders, and support value-based care population health reporting workflows.

Registered NurseRN

A licensed clinical provider whose credentials, NPI, and role codes are stored across EHR, claims, and staffing systems. Data engineers reference RN identifiers to attribute clinical documentation, care plan entries, medication administration records, and nursing encounter events in downstream analytics pipelines.

Reorder Pointreord_pt

The inventory threshold level at which a healthcare supply chain or pharmacy system triggers a replenishment order for medications or medical supplies. Data engineers use this field in pharmacy and materials management systems to automate restocking logic and prevent dispensing disruptions.

Representational State TransferREST

An architectural style used to design stateless API interfaces for exchanging healthcare data between EHR, payer, PBM, and interoperability platforms. Data engineers implement REST APIs to support FHIR-compliant data access, real-time eligibility checks, and CMS-mandated patient data sharing requirements.

Respiratory RateRR

A vital sign measurement recorded in breaths per minute and stored in EHR flowsheets, ADT feeds, and clinical observation tables. Data engineers use RR values to populate sepsis alerting models, validate ICU monitoring data pipelines, and support risk stratification in population health analytics systems.

Respiratory Syncytial VirusRSV

A common viral pathogen whose diagnosis codes, lab test results, and immunization records appear in EHR, claims, and public health surveillance systems. Data engineers use RSV-related data to support outbreak monitoring, seasonal trend analysis, and nirsevimab or palivizumab immunization program reporting workflows.

Result Statusres_sts_cd

A coded value indicating the current processing state of a laboratory test result in a clinical data system. Common values include preliminary, final, corrected, and cancelled. Used in EHR laboratory information systems and clinical data warehouses to track result lifecycle from order to final reporting.

Reverse Transcription Polymerase Chain ReactionRT-PCR

A molecular diagnostic technique that converts RNA to DNA before amplification, widely used in EHR and LIS systems for viral detection including COVID-19 and influenza. RT-PCR result records in clinical data pipelines include test codes, specimen types, cycle threshold values, and interpreted outcomes for public health reporting.

RheumatologyRHEUM

A medical specialty focused on autoimmune and musculoskeletal conditions, represented in EHR, claims, and referral systems as RHEUM. Data engineers use this specialty code to route referrals, segment provider networks, filter specialty-specific encounter data, and build condition management analytics for populations with arthritis or lupus.

Right EarAD

A Latin abbreviation meaning right ear used in medication prescribing for otic medications. Documents the intended ear for drug administration in pharmacy dispensing records and EHR medication administration records. Used alongside AS (left ear) and AU (both ears) in clinical documentation.

Right EyeOD

The standardized clinical abbreviation for the right eye used in ophthalmology EHR, pharmacy, and prescription systems. OD originates from the Latin oculus dexter and appears in medication orders, vision exam records, and optometric claims. Data engineers must map OD correctly to laterality fields to avoid clinical data errors.

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