2027 ICD-10-CM Diagnosis Code P92.6Failure to thrive in newborn

ICD-10-CM Codes›P00–P96›P90-P96›P92

ICD-10-CM P92.6
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

P92.6 is a billable ICD-10-CM diagnosis code for failure to thrive in newborn. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 640 through 641. Coders also document this condition as failure to gain weight. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Neonatal digestive and feeding disorders.

Code Identity

ICD-10-CM Code
P92.6
Billable Status
Yes — Valid for Submission
Code Describes
Failure to thrive in newborn
Short Description
Failure to thrive in newborn
Same as the full description in the CMS dataset.
Parent Code
P92
Feeding problems of newborn

Code Classification

ChapterP00–P96Certain conditions originating in the perinatal period
SectionP90-P96Other disorders originating in the perinatal period
CategoryP92Feeding problems of newborn
This CodeP92.6Failure to thrive in newborn

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Failure to gain weight
  • Failure to thrive
  • Failure to thrive in infant
  • Infantile erythroderma, failure to thrive and diarrhea syndrome
  • Neonatal failure to thrive
  • Organic failure to thrive
  • Pediatric failure to thrive
  • Renal function impairment with growth failure
  • Severe feeding difficulties, failure to thrive, microcephaly due to ASXL3 deficiency syndrome

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to P92.6: its own notes plus those printed at P92 and Chapter 16. A note printed at a category, block or chapter applies to every code under it.

Includes

Further defines, or gives examples of, the content of the category.

From Chapter 16 (P00-P96) Certain conditions originating in the perinatal period applies to 463 codes
  • conditions that have their origin in the fetal or perinatal period (before birth through the first 28 days after birth) even if morbidity occurs later

Excludes1

Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.

On P92.6 itself
  • failure to thrive in child over 28 days old (R62.51)
From P92 Feeding problems of newborn applies to 10 codes

Excludes2

Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.

From P92 Feeding problems of newborn applies to 10 codes
  • feeding problems in child over 28 days old (R63.3-)
From Chapter 16 (P00-P96) Certain conditions originating in the perinatal period applies to 463 codes
  • congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
  • endocrine, nutritional and metabolic diseases (E00-E88)
  • injury, poisoning and certain other consequences of external causes (S00-T88)
  • neoplasms (C00-D49)
  • tetanus neonatorum (A33)

Notes

General instructions on how these codes are used.

From Chapter 16 (P00-P96) Certain conditions originating in the perinatal period applies to 463 codes
  • Codes from this chapter are for use on newborn records only, never on maternal records

Source: CMS ICD-10-CM Tabular List. How to read instructional notes.

Referenced in Other NotesGuidance

Instructional notes printed at other codes that name P92.6, its category, or a range that includes it.

Excludes1 2

These codes carry an Excludes1 note naming P92.6: they are not reported together with it, unless the two conditions are unrelated.

  • R62.51 Failure to thrive (child)
    failure to thrive in child under 28 days old (P92.6)
  • F50 Eating disorders
    feeding problems of newborn (P92.-) names P92.-, which includes this code

Excludes2 3

These codes carry an Excludes2 note naming P92.6: its condition is not part of those codes, and both may be reported when the patient has both.

  • E63 Other nutritional deficiencies
    feeding problems in newborn (P92.-) names P92.-, which includes this code
  • F98.2 Other feeding disorders of infancy and childhood
    feeding problems of newborn (P92.-) names P92.-, which includes this code
  • R63.3 Feeding difficulties
    feeding problems of newborn (P92.-) names P92.-, which includes this code

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR PNL012
Neonatal digestive and feeding disorders
Default principal diagnosis: inpatient Yes · outpatient Yes

Patient EducationClinical

Growth Disorders

Does your child seem much shorter - or much taller - than other kids his or her age? It could be normal. Some children may be small for their age but still be developing normally. Some children are short or tall because their parents are.

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Convert P92.6 to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
779.34 NB failure to thrive
Exact Match The mapping is direct, with no qualifiers.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About P92.6Overview

What is the ICD-10 code for failure to thrive in newborn?

The ICD-10-CM code for failure to thrive in newborn is P92.6 (sometimes written as P926). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

Is P92.6 (Feeding problems of newborn) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report failure to thrive in newborn on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

What MS-DRG does P92.6 group to?

When failure to thrive in newborn is the principal diagnosis on an inpatient stay, it groups to MS-DRG 641, 640, with relative weights from 0.7864 to 1.3392 depending on complications. Higher weights mean higher Medicare reimbursement.

Can P92.6 be reported with R62.51?

Not as a rule. The Excludes1 note on P92.6 lists "failure to thrive in child over 28 days old (R62.51)". An Excludes1 note means the excluded code is never reported together with this one; the only exception is when the two conditions are unrelated to each other (Official Guidelines, Section I.A.12.a).

What is the ICD-9 equivalent of P92.6?

Under the General Equivalence Mappings, failure to thrive in newborn converts to ICD-9-CM 779.34 (NB failure to thrive). The mapping is a direct match.