CPT Code 99255: Inpatient or Observation Consultation, Level 5, 80 Minutes

Learn about CPT code 99255 for inpatient consultations requiring 80 minutes or high-complexity care. Understand billing and documentation needs.

Use Code

What is inpatient consultation (Level 5)?

CPT code 99255 is used for inpatient or observation consultations that require high-complexity medical decision making or at least 80 minutes of total time on a single date.

This code represents the highest level of inpatient consultation and is typically used when a patient's condition is severe, multifactorial, or needs extensive diagnostic workup and care coordination.

Moreover, it involves evaluation and management services of new or established patients in an inpatient or observation setting. A medically appropriate history and/or examination is also required. The consultation must be formally requested by another physician or qualified health care professional, and the provider must document their opinion and communicate it back to the requester.

CPT code 99255 documentation requirements

Records must clearly reflect:

Request for consultation by another provider and reason for referral
Comprehensive history and physical examination
Extensive review of diagnostics and prior records
High-complexity decision-making (multiple diagnoses, extensive data, high risk)
Assessment and treatment plan
Total time (if billed based on time; must be ≥80 minutes)
Documentation of communication back to requesting provider

Complexity should be evident from both data reviewed and interventions considered.

CPT code 99255 billing guidelines

Keep in mind the following when billing for the service:

If selecting the code based on time, a minimum of 80 minutes must be spent on the consultation date.
For services that extend beyond 95 minutes, prolonged services code should be used in addition.
Only one inpatient consult may be billed per admission per provider.
Not valid for self-referrals or transfer of care.
Verify payer coverage; Medicare does not reimburse consultation codes.

Used when significant chart review, prolonged in-person exam, and comprehensive coordination are medically necessary.