E83.42 — Hypomagnesemia
ICD-10-CM
Prior Authorization
No Prior Auth Required
Code is covered without prior authorization (high confidence)
Documentation Required
- Maintain all documentation in the patient's medical record and make it available to the contractor upon request; every page must be legible and include patient identification and dates of service.
- The medical record must include the legible signature of the physician or non-physician practitioner responsible for and providing the patient's care.
- The submitted medical record must support the use of the selected ICD-10-CM code(s) and the submitted CPT/HCPCS code must describe the service performed.
- If the service provider is not the ordering/referring physician, that provider must maintain hard-copy documentation of test results and interpretation plus copies of the ordering/referring physician’s order.
Key Coverage Criteria
- Parathormone (parathyroid hormone) testing is covered when medical necessity and reasonable-and-necessary criteria specified in Local Coverage Determination L34018 are met.
- For renal dialysis facilities submitting claims for parathormone testing, use diagnosis code N18.6 (end stage renal disease).
- ICD-10-CM Codes that Support Medical Necessity — Group 1 (covered diagnoses): D56.1 - Beta thalassemia
- ICD-10-CM Codes that Support Medical Necessity — Group 1 (covered diagnoses): D57.02 - Hb-SS disease with splenic sequestration
- ICD-10-CM Codes that Support Medical Necessity — Group 1 (covered diagnoses): D57.1 - Sickle-cell disease without crisis
- ICD-10-CM Codes that Support Medical Necessity — Group 1 (covered diagnoses): D57.212 - Sickle-cell/Hb-C disease with splenic sequestration
11 Active Policies
L34018 — Parathormone (Parathyroid Hormone)
J09
A57122 — Billing and Coding: Parathormone (Parathyroid Hormone)
J09
A57189 — Billing and Coding: Serum Magnesium
A57326 — Billing and Coding: Electrocardiograms
A59186 — Billing and Coding: Magnesium
Related Codes
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