Reimbursement
$83.17
Threshold
40m
2026 Status
Active
What is CPT Code 99221?
CPT 99221 is defined as: Initial hospital inpatient or observation care, per day, for the evaluation and management of a patient, which requires a medically appropriate history and/or examination and straightforward or low level medical decision making. Typically involves stable patients with new problems requiring investigation.
This code is primarily used for E/M services. It falls under the category of Hospital Inpatient/Observation & Emergency Department and is valid for the 2026 calendar year according to the CMS Physician Fee Schedule.
2026 RVU Components
Relative Value Units (Non-Facility)
Work RVU
1.92
Physician Effort
PE (Non-Fac)
0.41
Practice Expense
Malpractice
0.16
Risk Factor
Total RVU
2.49
Note: [(Work RVU * Work GPCI) + (PE RVU * PE GPCI) + (MP RVU * MP GPCI)] * Conversion Factor
2026 CMS Policy Intelligence
facility pe adjustment
2026 policy reflects a minor reduction in facility PE RVUs compared to non-facility settings to account for hospital overhead coverage.
observation unification
99221-99223 now fully cover both 'Inpatient' and 'Observation' status, simplifying the code set.
efficiency shield
Exempt from the -2.5% efficiency adjustment because it is a professional E/M service.
Administrative Framework
Global Period
000
Place of Service
NCCI Exclusions
Key Modifiers
Operational Requirements
minimum time
40 minutes (if billing by time)
staff type
Physician or other Qualified Health Care Professional (QHP)
frequency
Once per admission per specialty
add on codes
care plan requirement
Medically appropriate history and/or physical exam; straightforward/low MDM.
Compliance Checklist
Audit Defense
No specific audit defense elements defined.
2026 Update
Medicare is auditing the 'Observation vs Inpatient' documentation to ensure patients meet stay length requirements.
Common Clinical Scenarios
CMS Eligibility: 1 new problem or exacerbation of stable chronic condition. Admission throughput
Target Specialties & Utilization
Typical Clinical Indications (ICD-10)
Billing Differentiation
VS 99222
99222 is for moderate MDM and 55 minutes.
VS 99231
99231 is for SUBSEQUENT days; 99221 is only for the INITIAL day.
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