What Are the ICD-10 Codes for Hyperlipidemia?

by | Published on Jun 28, 2022 | Medical Coding

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Hyperlipidemia is a common medical condition characterized by elevated levels of lipids (such as cholesterol and triglycerides) in the blood. In ICD-10, hyperlipidemia is classified under the “E” category, which includes endocrine, nutritional, and metabolic diseases. Hyperlipidemia encompasses various types and subtypes, each with its own ICD-10 codes. Selecting the correct code requires a thorough understanding of the condition and its classification. That’s why physicians prefer to rely on medical coding and billing services to ensure accurate and precise reporting of hyperlipidemia and other conditions. Outsourcing companies providing these services employ coding specialists who have expertise in medical coding and can accurately assign the appropriate ICD-10 codes based on the provided medical documentation.

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According to the Centers for Disease Control and Prevention (CDC), nearly 25 million adults in the United States have total cholesterol levels above 240 mg/dL. It is also estimated that about 7% of U.S. children and adolescents ages 6 to 19 have high total cholesterol. If undiagnosed or untreated, clogged arteries can trigger heart attack, stroke, or lead to other serious conditions. People with untreated hyperlipidemia are twice as likely to develop coronary artery disease (CAD) as those with cholesterol levels in the normal range. Although high cholesterol levels can be inherited, it is most often the result of lifestyle factors like an poor diet and insufficient physical activity.

ICD-10 Codes for Hyperlipidemia

The specific ICD-10 code to report for hyperlipidemia depends on the type and severity of the condition. Here are some commonly used codes:

E78.0 – Pure hypercholesterolemia: This code is used when there are elevated levels of cholesterol in the blood without a significant increase in triglyceride levels.

  • E78.00 Pure hypercholesterolemia, unspecified
  • E78.01 Familial hypercholesterolemia

E78.1 – Pure hyperglyceridemia: This code is used when there are elevated levels of triglycerides in the blood without a significant increase in cholesterol levels. It is applicable to:

  • Elevated fasting triglycerides
  • Endogenous hyperglyceridemia
  • Fredrickson’s hyperlipoproteinemia, type IV
  • Hyperlipidemia, group B
  • Hyperprebetalipoproteinemia
  • Very-low-density-lipoprotein-type [VLDL] hyperlipoproteinemia

E78.2 – Mixed hyperlipidemia: This code is used when there are elevated levels of both cholesterol and triglycerides in the blood.
E78.3 – Hyperchylomicronemia: This code is used when there are very high levels of triglycerides due to a deficiency of lipoprotein lipase or other enzymes involved in lipid metabolism.
E78.4 – Other hyperlipidemia:

  • E78.41 Elevated Lipoprotein
  • E78.49 Other hyperlipidemia

E78.4 is used when there is a specific type of hyperlipidemia that is not covered by the above codes.

Additional ICD-10 Codes for More Specific Details

There are additional codes that provide more specific details and further subclassify hyperlipidemia based on factors such as the presence of atherosclerosis or a history of cardiovascular disease. Here are some examples of additional ICD-10 codes for hyperlipidemia:
E78.5 – Hyperlipidemia, unspecified: This code is used when the specific type of hyperlipidemia is not documented or known.
E78.6 – Lipoprotein deficiency: This code is used when there is a deficiency of specific lipoproteins, such as low-density lipoproteins (LDL) or high-density lipoproteins (HDL).
E78.7 – Disorders of bile acid and cholesterol metabolism: This code is used when there are abnormalities in the metabolism of bile acids and cholesterol, which can contribute to hyperlipidemia.
E78.8 – Other specified hyperlipidemia: This code is used for specific types of hyperlipidemia that are not covered by the above codes, such as familial hypercholesterolemia or secondary hyperlipidemia due to medications or other medical conditions.
E78.9 – Hyperlipidemia, unspecified: Similar to E78.5, this code is used when the type of hyperlipidemia is not specified or known.

Coding Guidelines for Hyperlipidemia

The selection of the appropriate ICD-10 code should be based on the documentation provided by the healthcare provider. The ICD-10 code should reflect the highest level of specificity available. Accurate coding requires detailed medical records, laboratory results, and clinical assessment. Here are some guidelines for coding hyperlipidemia:

  • Thoroughly review of medical documentation: Coding should be based on a careful review of the medical record, including physician notes, diagnostic reports, laboratory results, and any other relevant documentation. Accurate coding relies on having comprehensive and specific documentation regarding the type of hyperlipidemia, lipid levels, associated conditions, and any complications or comorbidities.
  • Adhere to code conventions and guidelines: Correct coding requires following ICD-10 guidelines on the use of combination codes, code sequencing rules, and any special instructions or notes provided for specific codes or conditions.
  • Code to the highest level of specificity: Select the most specific code that accurately reflects the patient’s condition. The documentation should be examined for details such as the type of hyperlipidemia (e.g., pure hypercholesterolemia, mixed hyperlipidemia), associated conditions (e.g., atherosclerosis), and any related complications or manifestations. Avoid using unspecified codes unless there is no other suitable option.
  • Consider underlying causes and associated conditions: Hyperlipidemia can be primary (genetic) or secondary to other factors such as lifestyle, medications, or underlying medical conditions. Also, hyperlipidemia often coexists with other conditions such as hypertension, diabetes, or cardiovascular disease. Assign additional codes to capture these comorbidities or complications, as appropriate. Follow the coding guidelines for sequencing and prioritizing the primary and secondary diagnoses.

Accurate coding is crucial for proper reimbursement, statistical analysis, and effective communication among healthcare providers. Physicians should ensure that the documentation provides enough details to support the use of specific codes. If the clinical documentation is unclear or lacks specific details, coding specialists in medical billing outsourcing companies will seek clarification or additional information that may be necessary for accurate coding. These professionals stay updated with ICD-10 codes and guidelines to ensure accurate and up-to-date coding practices.

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Rajeev Rajagopal

Rajeev Rajagopal, the President of OSI, has a wealth of experience as a healthcare business consultant in the United States. He has a keen understanding of current medical billing and coding standards.

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