Summary & Overview
CPT 82190: Atomic Absorption Spectroscopic Elemental Analysis
CPT code 82190 denotes laboratory measurement using atomic absorption spectroscopic analysis to quantify elemental concentrations in biological or environmental samples. This technical assay is a core clinical laboratory procedure with implications for toxicology, trace element assessment, and monitoring of metals exposure. Nationally, accurate coding for 82190 supports appropriate laboratory billing, quality measurement, and surveillance of metal-related diagnoses.
Key payers covered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise overview of the clinical context for atomic absorption spectroscopy, guidance on typical service settings, and national benchmarking topics relevant to payers and lab providers. The publication summarizes common billing modifiers and other administrative details when available, highlights service-line considerations for clinical laboratories, and outlines where input was not provided.
This article is intended for laboratory administrators, billing professionals, and policy analysts seeking a national-level briefing on CPT code 82190, its clinical purpose, operational settings, and the payer landscape typically involved in reimbursement and utilization discussions.
Billing Code Overview
CPT code 82190 describes measurement of samples by atomic absorption spectroscopic analysis, a laboratory technique that quantifies elemental concentrations by measuring absorption of spectral radiation by free atoms in a gaseous state.
Service Type: Clinical laboratory quantitative elemental analysis
Typical Site of Service: Clinical laboratory or hospital laboratory
Data not available in the input.
Clinical & Coding Specifications
Clinical Context
A typical patient is an adult referred from primary care or occupational health for measurement of trace elements or heavy metals (for example, lead, arsenic, cadmium) after occupational exposure, environmental concern, or clinical signs such as unexplained anemia, neuropathy, gastrointestinal symptoms, or developmental delay in a child. The clinical workflow begins with the ordering clinician documenting the indication and relevant history, obtaining an appropriate specimen (usually whole blood, serum, or urine) following collection and chain-of-custody procedures when required, and sending samples to a clinical laboratory with atomic absorption spectroscopy capability. In the lab, a medical technologist or clinical chemist prepares samples, runs atomic absorption spectroscopic analysis using calibration standards and controls, interprets instrument output, and reports quantitative element concentrations into the electronic medical record. Results are reviewed by the ordering provider for clinical correlation, follow-up testing, or exposure mitigation as needed. Typical site of service is an outpatient clinical laboratory, hospital laboratory, public health laboratory, or occupational medicine clinic with reference lab support.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
26 | Professional component | Use when billing only the professional component of the test (interpretation and report) provided separately from the technical component. |
TC | Technical component | Use when billing only the technical component (equipment, technician, reagents) of the test. |
90 | Reference (outside) laboratory | Use when the specimen is sent to an outside independent laboratory for testing. |
52 | Reduced services | Use when the test was partially performed or specimen volume/quality limited testing. |
53 | Discontinued procedure | Use when specimen collection or analysis was started but then discontinued for documented clinical reasons. |
59 | Distinct procedural service | Not in the provided list; excluded per instructions. |
22 | Increased procedural services | Use when lab work required substantially greater resources or complexity than typical and documentation supports unusual effort. |
78 | Unplanned return to procedure room by same physician following initial procedure | Rarely applicable; can be used when additional on-site procedures tied to testing occur during same encounter. |
80 | Assistant surgeon | Not typically applicable; limited use in surgical contexts only. |
82 | Assistant not available | Not typically applicable; limited use in surgical contexts only. |
AS | Left unspecified; see exact code AS | Use per payer policy when an accredited facility or provider-specific modifier applies (payer-specific use). |
| Taxonomy Code | Specialty | Notes |
|---|---|---|
Laboratory | Clinical Laboratory/Pathology | Clinical laboratory scientists, medical technologists, and pathologists oversee and perform atomic absorption testing and result interpretation. |
Occupational Health | Occupational Medicine | Occupational medicine physicians order and interpret toxicology testing for workplace exposures. |
Pediatrics | Pediatrics | Pediatricians order lead and other element testing for developmental exposure concerns. |
Internal Medicine | Internal Medicine | Internists manage adult patients with suspected toxic exposures, anemia, or neuropathy requiring element testing. |
Public Health | Public Health Laboratory Services | Public health clinicians and labs perform population-level or regulatory testing for environmental exposures. |
Related Diagnoses
| ICD-10 Code | Description | Clinical Relevance |
|---|---|---|
R79.8 | Other specified abnormal findings of blood chemistry | Used when abnormal element levels are identified or when laboratory evaluation for abnormal chemistry is ordered. |
T56.0X1A | Toxic effect of lead and its compounds, accidental (unintentional), initial encounter | Directly indicates lead poisoning where atomic absorption testing quantifies blood lead levels. |
Z57.9 | Occupational exposure to unspecified agents | Used when testing is performed because of suspected workplace exposure to metals. |
R53.1 | Weakness | Symptom that may prompt testing for heavy metal toxicity when unexplained. |
D64.9 | Anemia, unspecified | Anemia can be associated with certain heavy metal exposures (e.g., lead) and prompt elemental analysis. |
Related CPT Codes
| CPT Code | Description | Relationship to This Procedure |
|---|---|---|
82040 | Lead, blood; screening test | Commonly ordered as an initial screening for lead exposure; may precede or accompany atomic absorption quantitative analysis. |
82310 | Lead and lead compounds; quantitative, blood | Quantitative blood lead measurement often performed by atomic absorption spectroscopy; alternative specific CPT for lead. |
82300 | Copper; quantitative | Measurement of trace elements such as copper may be performed in the same laboratory workflow using spectroscopic techniques. |
82570 | Bilirubin; total | Not directly related to atomic absorption but commonly ordered in toxicology panels or metabolic evaluations in the same visit. |
80100 | Toxicology multiple drug classes; initial screen | Toxicology screening may be ordered alongside elemental testing in suspected exposure cases. |