Which digit is only used for a postpartum complication in delivery and pregnancy diagnoses?

The number 4 is specifically used in the ICD-10-CM coding system to indicate that the complication is a postpartum issue related to delivery and pregnancy diagnoses. This digit is essential because it provides clear and precise information regarding the timing of the complication, distinguishing it from complications that may arise at other times.

In the context of postpartum complications, the use of this specific digit helps coders identify conditions that occur after delivery, which can be crucial for effective patient management and billing.

The remaining digits do not serve this exclusive role in indicating postpartum complications. Understanding the specific function of each digit in the ICD-10-CM coding system is vital for accurate coding, as it affects healthcare reporting and reimbursement processes. Familiarity with these designations allows healthcare professionals to improve the quality of care provided to patients based on the complications recorded in their medical histories.