Certain conditions originating in the perinatal period are reported with codes beginning with the letter P in International Classification of Diseases, 10th Revision, Clinical Modification (ICD-10-CM); these codes are found in Chapter 16 of the ICD-10-CM tabular list. Guidelines for reporting conditions found in ICD-10-CM Chapter 16 are similar to those in Chapter 15 of International Classification of Diseases, Ninth Revision, Clinical Modification (ICD-9-CM). However, there are a few substantial differences. The Table provides a comparison of the guidelines.

Chapter 16 of the tabular list for ICD-10-CM includes more helpful instructions for reporting conditions originating in the perinatal period.

Beyond the guidelines and instructions of the tabular list for perinatal conditions are other differences, such as the absence of ICD-10-CM codes for the following conditions:

This aligns ICD-10-CM codes with current definitions of prematurity and low birth weight that do not include these conditions.

These are the most significant differences...

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