An ICD-10-CM code is considered _____ if the number of characters required have not been assigned.

An ICD-10-CM code is classified as invalid when it does not meet the specified requirements for the number of characters necessary for a complete code. Each ICD-10-CM code consists of a specific format that includes a designated number of characters, which are required for proper coding.

If an ICD-10-CM code lacks the appropriate number of characters, it fails to meet coding standards, meaning it cannot be used for billing or documentation purposes. Valid codes must adhere to complete character requirements, which typically include three to seven characters, depending on the specific code and the level of detail required.

In the context of medical coding, maintaining accuracy and compliance with coding standards is crucial for correct medical billing and for ensuring that healthcare providers receive appropriate reimbursement for services rendered. Therefore, identifying a code as invalid helps coders recognize that further action is necessary to find a correct, complete code before proceeding with documentation or billing.