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You are here: Home / Articles / Understanding the Z Codes in ICD-10

Understanding the Z Codes in ICD-10

December 15, 2015 • By From the College

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Two months into the transition, the ICD-10 code set is still not exactly the most enticing reading material. But there is still so much to learn and apply, that it is necessary for physicians, coders and billers to stay abreast of the coding and billing guidelines. Although all of the guidelines and conventions may be overwhelming, it’s imperative to understand the level of coding that is necessary to avoid denials or rejections. One main focus of ICD-10 in the media and practices nationwide is that of external cause codes, but a specific focus for rheumatology practices is understanding the difference between using external cause codes and status codes.

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We constantly hear of “freak accidents” and wonder sometimes if the reports are even real. But a lot of this comes into reality when looking through the ICD-10 manual and seeing such codes as W61.02xA, struck by parrot, initial encounter, or W55.32xA, struck by other hoof stock, initial encounter. External cause codes are intended to provide data for injury research and evaluation of injury-prevention strategies. These codes capture how the injury or health condition happened; the intent, whether unintentional or accidental, or intentional, such as suicide or assault; the place where the event occurred or the activity of the patient at the time of the event; as well as the person’s status (e.g., civilian, military).

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The Centers for Medicare & Medicaid Services states that, “There is no national requirement for mandatory ICD-10-CM external cause code reporting. Unless a provider is subject to a state-based external cause code reporting mandate or these codes are required by a particular payer, reporting of ICD-10-CM codes in Chapter 20, External Causes of Morbidity, is not required. In the absence of a mandatory reporting requirement, providers are encouraged to voluntarily report external cause codes, as they provide valuable data for injury research and evaluation of injury prevention strategies.”

Keep in mind that some states require tracking of different diagnoses and procedures for public health reasons. So there may be some less absurd ICD-10 codes required by law, and this will need to be monitored by individual states.

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On the other hand, a Z code (replacing the V codes in ICD-9) represents reasons for some encounters and requires a corresponding procedure code to accompany the Z code if a procedure is performed. They are a special group of codes provided in ICD-10-CM for the reporting of factors influencing health status and contact with health services. Z codes are designated as the principal/first listed diagnosis in specific situations such as:

    • To indicate that a person with a resolving disease, injury or chronic condition is being seen for specific aftercare, such as the removal of internal fixation devices, such as orthopedic pins;
    • To indicate that a person is seen for the sole purpose of special therapy, such as chemotherapy, immunotherapy and radiation therapy; or
    • To indicate that a person not currently ill is encountering the health service for a specific reason.

The significant change between the two coding classifications is that ICD-9-CM’s supplementary codes are now incorporated into the main classification in ICD-10-CM. This integration has allowed Z codes to gain recognition with their own chapter in the manual and can be found in Chapter 21, Factors Influencing Health Status and Contact with Health Services. The increased specificity of Z codes is designed to help with understanding why the patient was seen for the date of service and will eventually help get claims paid faster and with fewer errors, and minimize requests for medical records or chart reviews, as they will clearly guide the reason for the visit. The similarities of the coding categories are the general intent to report issues, other than diagnoses, regarding health status or contact with health services for a patient.

Pages: 1 2 3 | Single Page

Filed Under: Billing/Coding, From the College, Practice Management Tagged With: Billing, Coding, ICD-10, ICD-9, Practice Management, Reimbursement, revenue, rheumatologist, Z codesIssue: December 2015

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