ICD-10-CM

In ICD-10-CM, brackets clarify diagnosis details through two main uses: they indicate alternate terms or descriptions related to the main term, helping coders understand nuances, and they provide permissions for use, offering instructions on code applications in specific contexts. Proper interpretation of brackets is essential for accurate medical coding, record-keeping, and billing.

In ICD-10-CM, various symbols and abbreviations are used to clarify coding instructions:

• Colon (:)

  • Indicates that further information is needed. It denotes that additional characters must follow to complete the code, often used with codes that require subcategories.

• Parentheses ( )

  • Encloses supplementary information or descriptors that do not affect the code assignment. They help clarify the meaning of the code without influencing the actual diagnosis.

• NEC (Not Elsewhere Classified)

  • Used when a specific code does not exist for a diagnosis or condition that is being coded. It indicates that there is no more specific code available in the classification system.

• NOS (Not Otherwise Specified)

  • Indicates that a specific diagnosis is not stated in detail. It is used when the provider doesn’t specify the nature of the condition, thus the coder assigns a code without more precise details.

• EXCLUDES1

  • Indicates that the code excluded should never be used at the same time as the code above the Excludes note. It marks conditions that are not clinically related.

• EXCLUDES2

  • Indicates that the code excluded is not part of the condition, but a patient may have both the condition and the excluded code at the same time. It shows that the two conditions can coexist.

• INCLUDES

  • Indicates specific conditions that are classified within a code category. It provides examples of conditions that fall under the umbrella of the code to ensure accurate coding and understanding of its scope.