Weeks of gestation (Z3A)

Browse all the diagnosis codes used for weeks of gestation (z3a). For easy navigation, the diagnosis codes are sorted in alphabetical order and grouped by sections. Each section is clearly marked with its description, and the corresponding three-digit code range. This format makes it simple to browse diagnosis codes in this chapter or section and find what you're looking for. We've also added green checkmark icons to label billable codes, and red warning icons for non-billable ones. This makes it easy to identify which codes can be billed.

Clinical Information

Hypercapnia - A clinical manifestation of abnormal increase in the amount of carbon dioxide in arterial blood.

Instructional Notations

Code First

Certain conditions have both an underlying etiology and multiple body system manifestations due to the underlying etiology. For such conditions, the ICD-10-CM has a coding convention that requires the underlying condition be sequenced first followed by the manifestation. Wherever such a combination exists, there is a "use additional code" note at the etiology code, and a "code first" note at the manifestation code. These instructional notes indicate the proper sequencing order of the codes, etiology followed by manifestation.

• obstetric condition or encounter for delivery O09 O60 O80 O82

• Codes from category Z3A are for use, only on the maternal record, to indicate the weeks of gestation of the pregnancy, if known.