Phosphorus (Phosphate)

CPT: 84100
Metabolic

What This Test Measures

Electrolyte involved in bone, kidney, and PTH metabolism; abnormal in kidney disease and vitamin D deficiency.

Preparation

No fasting required
Fasting required. Phosphorus rises significantly after eating. Draw in the morning.

General guidelines only. Requirements vary by lab and individual. Confirm with your provider before adjusting any medications.

Turnaround Time

Varies by lab

Clinical Notes

Part of bone and kidney metabolism panels

ICD-10 Codes

Common diagnosis codes associated with this test. Codes are assigned by your provider.

E21.0Primary hyperparathyroidism
E83.51Hypocalcemia
N18.9Chronic kidney disease, unspecified

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Lab Codes

Proprietary codes used by each lab for this test.

American Esoteric Labs
C130(order_code)
ARUP Laboratories
0020039(order_code)
Cleveland Clinic
PHOS(mnemonic)
Clinical Labs of Hawaii
0104(order_code)
CPL
2227(order_code)
Geisinger Medical Labs
LAB2846(lab_id)
Interpath Laboratory
1012(order_code)
LabCorp
001024(order_code)
LabCorp
001610(order_code)
Mayo Clinic Labs
PHOS/8507(order_code)
Northwell Health Labs
5300065(order_code)
NYU Langone Health
LAB113(order_code)
Quest Diagnostics
718(order_code)
Stanford Health Care
PHOS(order_code)

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Related Tests

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CPT: 84100

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CPT: 82340

For informational purposes only

This page is for educational and research purposes only and does not constitute medical advice, diagnosis, or treatment recommendations. ICD-10 and CPT codes are assigned by your healthcare provider. Always consult a qualified healthcare provider before ordering any lab test or making decisions about your health.