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CPT 84100 Fee Schedule

Last Verified: December 2025

Healthcare providers use this code to document and receive reimbursement for visits that address moderate-level medical decision-making, often including multiple diagnoses or prescription management.

Phosphorus (Po4)
Key FactDetail
Service Type

Pathology and Laboratory Procedures

Chemistry Procedures

Common Place of Service

21 - Inpatient Hospital

81 - Independent Laboratory

Common Modifiers

None

26 - Professional component

TC - Technical component

Complexity LevelLow

National average reimbursement for CPT 84100 by major payers:

bcbs

$3.76

uhc

$3.37

aetna

$6.02

cigna

$6.81

Preview provider-level rates for...
For billing codeCPT 84100
PayerCodeRateNPITax IDStateSpecialty

Select a payer to view fee schedule data

Choose a payer from the options above to see rates for CPT 84100

United
84100$1.991013263136 - SYDNEY HAGGINS840405257 - CATHOLIC HEALTH INITIATIVES COLORADOCOFamily Medicine Physician (207Q00000X)
United
84100$8.501366415788 - ROBERT VOGT470895496 - (CO) ROBERT P VOGT INCCOFamily Medicine Physician (207Q00000X)
United
84100$1.991598783326 - LESLIE STANWIX841337350 - (CO) SOUTHWEST HEALTH SYSTEM INCCOFamily Medicine Physician (207Q00000X)
United
84100$1.991730407321 - MARK WISTHOFF800348943 - POUDRE VALLEY MEDICAL GROUP LLCCOFamily Medicine Physician (207Q00000X)
United
84100$7.281366149734 - EASTERN RIO BLANCO COUNTY HEALTH SERVICE DISTRICT, COLORADO ADVANCED ORTHOPEDICS CLINIC870788731 - (CO) EASTERN RIO BLANCO COUNTY HEALTH SERVICE DISTRICTCOFamily Medicine Physician (207Q00000X)
United
84100$1.991851408926 - ANNE GIESEN271625608 - (CO) WISDOM HEALTH PCCOGeriatric Medicine (Family Medicine) Physician (207QG0300X)
United
84100$9.721649218389 - JOSHUA EMDUR411806657 - (MN) CENTRACARE CLINICCOFamily Medicine Physician (207Q00000X)
United
84100$2.911881842987 - MELISSA VOUTSALATH840255530 - (CO) SAN LUIS VALLEY REGIONAL MEDICAL CENTERCOFamily Medicine Physician (207Q00000X)
United
84100$1.991053547224 - SARAH HODACK462578248 - (CO) BELLA NATURAL WOMENS CARECOFamily Medicine Physician (207Q00000X)
United
84100$1.991972722957 - NIDA AWADALLAH841343242COFamily Medicine Physician (207Q00000X)
United
84100$2.911083148456 - CRISTINA RABAZA840613540 - (CO) SALUD FAMILY HEALTHCOFamily Medicine Physician (207Q00000X)
United
84100$1.991922085182 - KAREN CAMPBELL-MUNCH840617567 - (CO) PEAK VISTA COMMUNITY HEALTH CENTERSCOFamily Medicine Physician (207Q00000X)
United
84100$2.771194706267 - JANETTE LORENA JAVIER840592527COFamily Medicine Physician (207Q00000X)
United
84100$1.991699214551 - CLAIRE DIAMANT-YEFET871660106 - (CO) HEALTH NOW INTEGRATED CARE LLCCOAdult Medicine Physician (207QA0505X)
United
84100$1.991922078229 - STEVEN SINGER882173069 - (CO) ALPINE MEDICAL GROUP COLORADO PLLCCOFamily Medicine Physician (207Q00000X)
United
99202$100.0012345678901234567890CACardiologist
United
99202$100.0012345678901234567890CACardiologist
United
99202$100.0012345678901234567890CACardiologist
United
99202$100.0012345678901234567890CACardiologist
United
99202$100.0012345678901234567890CACardiologist
United
99202$100.0012345678901234567890CACardiologist
United
99202$100.0012345678901234567890CACardiologist
United
99202$100.0012345678901234567890CACardiologist
United
99202$100.0012345678901234567890CACardiologist
United
99202$100.0012345678901234567890CACardiologist

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CPT 84100 vs. Other Chemistry Procedures Codes

The CPT 84100 code is part of the Pathology and Laboratory Procedures services used for Chemistry Procedures. It represents a moderate-complexity encounter and is one of several codes that vary based on time spent, level of medical decision-making, and documentation requirements.

The CPT 84100 code involves more provider time and moderate medical decision-making, unlike lower-level codes that require less time and simpler assessments. It typically includes multiple diagnoses, medication management, or test interpretation, leading to higher reimbursement and more detailed documentation requirements.

CodeComplexityDescription
84100-CPTLowPhosphorus (Po4)
84105-CPTLowPhosphorus Inorganic Urine
84132-CPTLowPotassium; Blood
84160-CPTLowCrp (C-Reactive Protein)

What is a fee schedule?

A fee schedule is a list of fixed prices that healthcare providers charge for specific services, including CPT 84100. These prices vary depending on payer type (Medicare, Medicaid, private insurance), geographic location, and provider contracts.

Understanding the 84100 fee schedule helps patients estimate costs and providers optimize billing for accurate reimbursements.

Factors that affect fee schedules


Medicare & Medicaid Rates

Government-set reimbursement amounts


Private Insurance Rates

Negotiated rates between providers and insurance companies


Geographic Location

Costs may be higher in urban areas.


Provider Type

Hospital providers may have different rates than private practice.

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