89049 Chct for mal hyperthermia
Also known as: contracture test malignant hyperthermia, malignant hyperthermia susceptibility test
Contracture test on muscle tissue for assessment of malignant hyperthermia susceptibility using specialized laboratory techniques.
In Plain Language
muscle reaction test for anesthesia risk; hereditary heat sensitivity test
Clinical Context
Diagnostic test on muscle biopsy for malignant hyperthermia susceptibility; performed in patients with family history or prior anesthetic complications.
RVU Breakdown
| Work RVU | 1.37 |
| Total RVU | 1.37 |
Est. Medicare Payment
National estimate based on 2026 CMS PFS Conversion Factor ($33.40). Actual payment varies by locality (GPCI adjustment).
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
With a work RVU of 1.37, this code ranks in the 88th percentile among Pathology & Lab codes — 2.0x the median (0.68). The highest wRVU in this category is 2.78.
Specialties
Frequently Asked Questions
What is CPT code 89049?
CPT 89049 (Chct for mal hyperthermia) is a Pathology & Lab code. Contracture test on muscle tissue for assessment of malignant hyperthermia susceptibility using specialized laboratory techniques.
Who uses CPT code 89049?
CPT 89049 is used by Laboratory, Anesthesiology. Diagnostic test on muscle biopsy for malignant hyperthermia susceptibility; performed in patients with family history or prior anesthetic complications.
When is CPT 89049 used?
Diagnostic test on muscle biopsy for malignant hyperthermia susceptibility; performed in patients with family history or prior anesthetic complications.
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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.