Medical Coding Guidelines for Personal and Family History
Personal and family history codes in medical coding are essential for documenting a patient’s medical background. This includes any past conditions or hereditary diseases that might affect their current health. Coders typically use these codes in addition to the codes for the patient’s present conditions. As a result, they provide a more comprehensive view of the patient’s health history. Accurate coding of personal and family history is crucial for correct reimbursement, effective disease prevention, and proper care planning.
This blog provides an overview of guidelines and best practices for coding personal and family history, particularly using ICD-10-CM (International Classification of Diseases, 10th Edition, Clinical Modification) codes.
What is Personal and Family History?
- Personal History: Refers to past medical conditions or diseases the patient has experienced. This includes prior surgeries, illnesses, and any past health events like cancer, heart disease, diabetes, or mental health conditions.
- Family History: Refers to the medical conditions that may run in the patient’s family. This includes genetic conditions, diseases with hereditary factors, and health concerns affecting immediate family members (e.g., parents, siblings, children).
In medical coding, these histories help physicians assess risks for certain conditions, guide preventive care, and make treatment decisions. The information can also influence the patient’s prognosis and the care plan.
ICD-10-CM Coding for Personal and Family History
ICD-10-CM offers specific codes for personal and family history under the category Z80-Z99. These codes are important for documenting a patient’s past health issues and potential risk factors. However, coders do not use personal and family history codes for the current diagnosis. Instead, these codes provide insight into factors that might impact present or future care.
Personal History Codes (Z80-Z82)
Coders assign personal history codes when the patient has a history of specific conditions or diseases. This applies even if the patient is currently not experiencing any active symptoms of those conditions. Typically, coders use these codes when the past condition could influence future care or risk.
- Z80-Z84: Coders use family history codes (discussed below) when the patient has a family member with a certain condition.
- Z85-Z86: Personal history of malignant neoplasms (e.g., Z85.3 for personal history of malignant neoplasm of the breast).
- Z87: Personal history of certain diseases, such as diabetes or hypertension (e.g., Z87.1 for personal history of hypertension).
Example Personal History Codes:
- Z86.59: Personal history of other diseases of the circulatory system.
- Z87.820: Personal history of gestational diabetes.
- Z85.118: Personal history of malignant neoplasm of the left lung.
Family History Codes (Z80-Z84)
Coders use family history codes to document hereditary risks or conditions within the patient’s immediate family. These codes do not indicate that the patient currently has the condition. Rather, they show that the patient’s family members (especially first-degree relatives) have a medical history of a condition that may affect the patient’s health.
- Z80: Family history of malignant neoplasms.
- Z81: Family history of mental health conditions, such as depression or schizophrenia.
- Z82: Family history of cardiovascular diseases, including heart disease, stroke, or hypertension.
- Z83: Family history of non-genetic conditions, such as diabetes or certain chronic illnesses.
- Z84: Family history of other conditions, such as autoimmune diseases.
Example Family History Codes:
- Z80.0: Family history of malignant neoplasm of the digestive organs.
- Z82.2: Family history of hypertension.
- Z83.3: Family history of diabetes mellitus.
Key Guidelines for Coding Personal and Family History
To properly code personal and family history, follow these guidelines:
When to Use Personal or Family History Codes
- Personal history codes apply when the patient has a documented history of a condition that is no longer active. However, that condition may still have an impact on the patient’s care or risk. For example, a patient who had breast cancer in the past but is currently cancer-free should still have a personal history code for breast cancer.
- Family history codes apply when there is a documented history of a disease or condition in the patient’s immediate family (parents, siblings, children). These codes highlight hereditary risks. However, do not use them if the patient themselves has the condition.
Accuracy in Selecting Codes
- Clarify whether the patient has a current or past condition: If the patient has a history of a condition that is still under treatment or surveillance, the code should reflect the ongoing management or monitoring. If the condition has resolved or is in remission, use the history code.
- Family history: Be sure to use the correct family member in question (e.g., mother, father, sibling). When a condition affects multiple family members, the code may refer to “family history of” the condition without specifying the individual family members.
Exclude Codes for Active Conditions
- Do not use personal history codes if the condition is still active or under active treatment. Instead, if the patient currently has a condition, use the relevant active condition code rather than a personal history code.
Preventive Care Considerations
- Providers often use personal and family history codes in preventive care settings. For example, a personal history of colon cancer might warrant increased screening frequency, and a family history of cardiovascular disease may lead to more aggressive management of the patient’s heart health.
Check for Specific Guidelines
- Always refer to the most up-to-date ICD-10-CM codebook and payer-specific coding guidelines. This is because code usage may vary for different insurance companies or healthcare systems.
Common Pitfalls in Coding Personal and Family History
- Misuse of Family History: Use family history codes only to indicate risk, not as a primary diagnosis. For example, a code like Z83.3 (family history of diabetes mellitus) indicates that a family member has diabetes, not that the patient has it.
- Confusion Between Active and Past Conditions: Be careful not to confuse a current condition with a past one. For example, code a patient with active hypertension under the hypertension code (I10, I11, etc.), not a personal history code.
- Failure to Code for Preventive Care: Personal and family history codes are often essential for documenting preventive care measures. For instance, if a patient has a family history of heart disease, use the family history code to justify additional cardiovascular screenings.
Accurate coding of personal and family history is crucial for a complete patient record and appropriate reimbursement. By using the proper ICD-10-CM codes for personal and family history, healthcare providers can ensure that they capture the patient’s medical background comprehensively. In addition, personal and family history codes help clinicians in risk assessment, preventive care, and ongoing disease management. This ultimately contributes to better patient outcomes.
Medical coders must be diligent in selecting the correct codes. They must also use personal and family history codes appropriately, never to replace current diagnoses or conditions. By adhering to these guidelines, healthcare providers can enhance the quality of care they provide while ensuring coding accuracy and compliance with insurance requirements.