P92.6Failure to thrive in newborn

P92.6 is the ICD-10-CM diagnosis code for failure to thrive in newborn. It belongs to category P92 (feeding problems of newborn), block P90-P96 (other disorders originating in the perinatal period) and chapter 16 (certain conditions originating in the perinatal period). It is billable, so it can be reported on its own for dates of service from October 1, 2026 through September 30, 2027.

Within P92 (feeding problems of newborn), P92.6 is specifically for failure to thrive in newborn. Related codes cover vomiting of newborn (P92.0), Regurgitation and rumination of newborn (P92.1), slow feeding of newborn (P92.2), Underfeeding of newborn (P92.3), Overfeeding of newborn (P92.4), neonatal difficulty in feeding at breast (P92.5), other feeding problems of newborn (P92.8) and feeding problem of newborn, unspecified (P92.9).

Don't report P92.6 together with the conditions in its Excludes1 note: failure to thrive in child over 28 days old (R62.51).

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 640 (Miscellaneous Disorders of Nutrition, Metabolism, Fluids and Electrolytes with MCC, relative weight 1.3395) and DRG 641 (Miscellaneous Disorders of Nutrition, Metabolism, Fluids and Electrolytes without MCC, relative weight 0.7865), in MDC 10 (Endocrine, Nutritional and Metabolic Diseases and Disorders), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Before ICD-10, this condition was coded in ICD-9-CM as 779.34 (failure to thrive in newborn).