83930 Assay of blood osmolality
Also known as: serum osmolality, plasma osmolality
Quantitative measurement of serum osmolality (concentration of dissolved particles) using freezing point depression osmometry.
In Plain Language
blood concentration test; particle count measurement
Clinical Context
Assessment of fluid status and electrolyte balance in critical illness, hypernatremia, hyponatremia, and toxin ingestion. Key in differentiating diabetes insipidus from SIADH.
RVU Information
CPT 83930 does not have a physician work RVU assigned by CMS. Reimbursement for this code is determined by payer-specific fee schedules.
Billing & Documentation
Lab and pathology codes require an order from the treating provider with clinical indication. For molecular pathology and genetic testing, document the specific analytes tested and clinical rationale.
How This Code Compares
This code has a work RVU of 0.00, meaning it does not have a physician work component assigned by CMS. In the Pathology & Lab category, 94% of codes share this characteristic.
Specialties
Frequently Asked Questions
What is CPT code 83930?
CPT 83930 (Assay of blood osmolality) is a Pathology & Lab code. Quantitative measurement of serum osmolality (concentration of dissolved particles) using freezing point depression osmometry.
Who uses CPT code 83930?
CPT 83930 is used by Pathology, Critical Care, Internal Medicine. Assessment of fluid status and electrolyte balance in critical illness, hypernatremia, hyponatremia, and toxin ingestion. Key in differentiating diabetes insipidus from SIADH.
When is CPT 83930 used?
Assessment of fluid status and electrolyte balance in critical illness, hypernatremia, hyponatremia, and toxin ingestion. Key in differentiating diabetes insipidus from SIADH.
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CPT® is a registered trademark of the American Medical Association. Data sourced from CMS Physician Fee Schedule RVU26A. Descriptions, synonyms, and clinical context are original content by RVU Edge.