ICD-10-CM 2027
ICD-10 code for infant irritable
From the official ICD-10-CM alphabetic index entry “Irritable, irritability › infant”. Page updated September 29, 2026.
About coding infant irritable
The ICD-10-CM code for infant irritable is R68.12 (Fussy infant (baby)).
Within R68.1 (nonspecific symptoms peculiar to infancy), R68.12 is specifically for Fussy infant (baby). Related codes cover excessive crying of infant (baby) (R68.11), Apparent life threatening event in infant (ALTE) (R68.13) and other nonspecific symptoms peculiar to infancy (R68.19).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
In MS-DRG v44.0, it is part of the grouping logic for DRG 947 (Signs and Symptoms with MCC, relative weight 1.261) and DRG 948 (Signs and Symptoms without MCC, relative weight 0.7835), in MDC 23 (Factors Influencing Health Status and Other Contacts with Health Services), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
Common questions about infant irritable ICD-10 codes
What is the ICD-10 code for infant irritable?
- R68.12 — Fussy infant (baby).
Is R68.12 billable?
- Yes. R68.12 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can R68.12 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict R68.12 as a principal diagnosis.
Is R68.12 a CC or MCC?
- No. R68.12 is neither a CC nor an MCC under MS-DRG v44.0.