Coding Ahead
CasePilot
Medical Coding Assistant
Case2Code
Search and Code Lookup Tool
CareerCenter
Medical Coding Job Board
Log in Register free account

Need help choosing the right code?

Ask CasePilot about procedures, modifiers, bundling, and coding guidance.

Try CasePilot

Official Description

Animal inoculation, small animal; with observation

© Copyright 2026 American Medical Association. All rights reserved.

Common Language Description

The CPT® Code 87001 refers to the procedure of inoculating a small animal with infected tissue, followed by a period of observation to study the effects of the infection. This process is typically conducted in a controlled environment where the animal's response to the infection can be monitored closely. The term "inoculation" refers to the introduction of pathogens or infected tissue into the animal's body to assess how the organism reacts to the infection. The observation phase is crucial as it allows researchers or veterinarians to gather data on the progression of the infection, the animal's immune response, and any clinical signs that may develop as a result. It is important to note that if the animal is subsequently dissected for further examination, the appropriate code to use would be CPT® Code 87003, which specifically addresses the dissection of the animal following inoculation.

© Copyright 2026 Coding Ahead. All rights reserved.

1. Indications

The procedure described by CPT® Code 87001 is indicated for the study of infectious diseases in small animals. It is typically performed in research settings or veterinary practices where understanding the effects of specific infections on animal health is necessary. The following conditions may warrant the use of this procedure:

  • Research Purposes This procedure is often utilized in scientific research to investigate the pathogenicity of various infectious agents.
  • Vaccine Development Inoculation may be part of the process to evaluate the efficacy of new vaccines or treatments against specific infections.
  • Diagnostic Studies It can also be used to confirm the presence of certain pathogens in a controlled environment.

2. Procedure

The procedure for CPT® Code 87001 involves several key steps that ensure the accurate inoculation and observation of the small animal. The following outlines the procedural steps:

  • Step 1: Preparation Prior to inoculation, the small animal is prepared for the procedure. This includes ensuring that the animal is healthy and suitable for the study, as well as obtaining any necessary approvals or consents for the research.
  • Step 2: Inoculation The animal is inoculated with infected tissue, which may contain live pathogens or other infectious agents. This is done using sterile techniques to minimize the risk of contamination and ensure the integrity of the study.
  • Step 3: Observation Following inoculation, the animal is placed under observation. This phase is critical as it allows for the monitoring of clinical signs, behavioral changes, and any adverse reactions that may occur as a result of the infection.
  • Step 4: Data Collection Throughout the observation period, data is collected regarding the animal's health status, including any symptoms that develop, the progression of the infection, and the overall response of the animal's immune system.

3. Post-Procedure

After the observation period, the animal's health is assessed to determine the outcome of the inoculation. Depending on the findings, further actions may be taken, such as additional treatments or interventions. It is important to document all observations and data collected during the procedure for future reference and analysis. If the study requires further examination of the animal's internal structures, dissection may be performed, in which case CPT® Code 87003 would be applicable. Care should be taken to follow ethical guidelines and regulations regarding the treatment and handling of the animal throughout the entire process.

Short Descr SMALL ANIMAL INOCULATION
Medium Descr ANIMAL INOCULATION SMALL ANIMAL W/OBSERVATION
Long Descr Animal inoculation, small animal; with observation
Status Code Statutory Exclusion (from MPFS, may be paid under other methodologies)
Global Days XXX - Global Concept Does Not Apply
PC/TC Indicator (26, TC) 9 - Not Applicable
Multiple Procedures (51) 9 - Concept does not apply.
Bilateral Surgery (50) 9 - Concept does not apply.
Physician Supervisions 9 - Concept does not apply.
Assistant Surgeon (80, 82) 9 - Concept does not apply.
Co-Surgeons (62) 9 - Concept does not apply.
Team Surgery (66) 9 - Concept does not apply.
Diagnostic Imaging Family 99 - Concept Does Not Apply
APC Status Indicator Items and Services Packaged into APC Rates
Type of Service (TOS) 5 - Diagnostic Laboratory
Berenson-Eggers TOS (BETOS) T1H - Lab tests - other (non-Medicare fee schedule)
MUE Not applicable/unspecified.
CCS Clinical Classification 235 - Other Laboratory
Date
Action
Notes
2015-01-01 Deleted Code deleted
Pre-1990 Added Code added.
CasePilot

Get instant expert-level medical coding assistance.

Ask about:
CPT Codes Guidelines Modifiers Crosswalks NCCI Edits Compliance Medicare Coverage
Example: "What is CPT code 99213?" or "Guidelines for E/M services"