Fussy infant (baby)

This code describes an infant exhibiting excessive irritability, crying, or general discontent that is beyond what is considered typical for their age. It indicates a behavioral symptom rather than a specific disease, often suggesting discomfort or an underlying issue that requires further investigation.

Use this code when documentation explicitly states "fussy infant" or "fussy baby" without a more specific diagnosis explaining the fussiness. This code is appropriate when the clinician has not yet identified a definitive cause for the infant's irritability, such as colic, reflux, or infection.

• Do not use this code if a more specific diagnosis for the fussiness (e.g., infantile colic, gastroesophageal reflux) is documented.
• Consider sequencing this code as a secondary diagnosis if the primary reason for the encounter is to investigate the cause of the fussiness.
• Ensure the medical record clearly supports the infant's age as being within the typical "infant" range (generally birth to 12 months).