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What are the correct modifiers for Microbiology Procedures Code 87073?

Are you looking for detailed information about the appropriate modifiers for the medical billing code 87073 for Microbiology Procedures, including a deeper understanding of each modifier's application? As a top expert in medical coding, I’ve designed this article to give you the comprehensive information you need. Remember, the American Medical Association (AMA) is the exclusive owner of the CPT codes, and you must be a licensed user to employ them in medical billing. Utilizing outdated CPT codes or operating without an AMA license is a direct violation of US regulations, leading to significant penalties. Stay compliant and use the most recent AMA-approved CPT codebook for accuracy and legal protection.

The code 87073, "Culture, bacterial; quantitative, anaerobic with isolation and presumptive identification of isolates, any source except urine, blood, or stool" is one of many codes in the CPT coding system, which plays a crucial role in the accurate representation of services provided by healthcare professionals. When applied accurately, modifiers serve to clarify and specify the specific context or conditions surrounding the medical procedure or service being billed.

Code 87073 use-cases

Modifier 59 – Distinct Procedural Service

Modifier 59 (Distinct Procedural Service) is used to indicate that a service is performed in a separate location from a previous service or that the procedure itself is distinct and doesn’t overlap with another service.

Let’s imagine a patient arrives at the clinic with a deep wound on their leg. The doctor takes a sample of the wound fluid, and this sample is later sent to the lab for culture and sensitivity testing. They also require additional blood tests. Here’s a real-life situation where modifier 59 can be applied:

Scenario: The laboratory bills for both the anaerobic wound culture (87073) and blood cultures. Because the lab analyzed separate specimens taken from different sources and performed distinct procedures on those specimens, modifier 59 would be appended to code 87073. This signals that this code is not a component or bundled part of another code in the patient's account, and it’s an independently billable service. The purpose of using Modifier 59 in this context is to ensure fair reimbursement for the distinct work performed on both the wound sample and the blood sample.

Modifier 90 - Reference (Outside) Laboratory

Modifier 90 is applied to signify that the service or procedure was performed in a lab that is not affiliated with the patient's main healthcare provider. The use of Modifier 90 might apply if a patient's doctor, working in a rural clinic, sends a sample for anaerobic culture to a larger, regional laboratory.

Scenario: Dr. Smith, a physician in a small town, wants to ensure her patient receives high-quality anaerobic culture analysis, for which she lacks the necessary equipment and expertise in her clinic. Dr. Smith refers her patient's sample to the Regional Lab, a highly reputable facility in the neighboring city. She might bill code 87073 and attach Modifier 90, informing the insurer that the test was performed externally.

Modifier 91 - Repeat Clinical Diagnostic Laboratory Test

When the same lab test is performed multiple times on the same day for a particular patient, modifier 91 is applied to denote the repeated testing.

Scenario: Sarah, a pregnant patient, has concerns about a persistent infection in her lower leg, and Dr. Patel has recommended repeat anaerobic wound cultures due to potential complications. The lab conducts two wound culture tests (87073) on the same day, using identical procedures. To indicate the repeated nature of these tests on the same day, modifier 91 would be attached to the second instance of 87073. This modifier provides the payer with the information that this is a re-examination of the original sample, done in the same location and timeframe.

Other modifiers not used for this code:

Several other modifiers listed for code 87073 aren't typically applicable. They may apply in specific scenarios but would rarely be utilized when reporting 87073, even with adjustments.

Example stories and why modifier is used for a specific case:

Case 1: When an additional analysis is requested on a specimen from an initial test

When a lab performs multiple tests on the same specimen and each test is independently billed, Modifier 59 would be assigned. This helps clarify that the services are distinct and separately billable. For example, a patient presents with a foot abscess. A culture of the abscess fluid is taken. The initial results show growth of bacteria and further identification, which requires additional tests. When the laboratory analyzes the specimen in a manner that doesn't overlap with the initial culture, Modifier 59 is appropriate to show a distinct procedural service.

Case 2: A doctor requests tests from a lab with whom they do not have an affiliation.

Modifier 90 should be used to report lab tests done at an outside reference laboratory when the testing facility is different from the physician’s or hospital’s own labs. For example, a general practitioner with limited lab resources sends a specimen to a regional, more specialized, outside lab. The physician's clinic would bill 87073 with modifier 90 to signify the test was performed outside their facility.

Case 3: A patient returns for an additional sample or a different procedure from an initial sample

Modifier 59 is a good choice for the provider’s office in a circumstance where there is no lab connection to a reference laboratory, and they require multiple distinct lab tests or procedures done on the same specimen, for example. If there are multiple tests, each should be billed as a distinct procedure. If tests are done on different samples or body sites on the same day, Modifier 59 will help ensure appropriate billing.

Disclaimer:

Please understand that this article is a brief example. Remember, CPT codes are protected by the American Medical Association and should be used in accordance with their guidelines and regulations. It is vital for you to stay updated with the latest information and licensing requirements from the AMA to ensure correct coding practices.

Learn about the correct modifiers for Microbiology Procedures Code 87073. Discover when to use modifiers 59, 90, and 91 for accurate medical billing with AI automation. This article explains how to apply these modifiers for distinct services, outside labs, and repeat tests. Find out how AI can streamline billing processes and improve accuracy.

What Modifiers Should I Use for Microbiology Procedure Code 87073?