2027 ICD-10-CM Diagnosis Code P78.83Newborn esophageal reflux

ICD-10-CM Codes›P00–P96›P76-P78›P78

ICD-10-CM P78.83
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

P78.83 is a billable ICD-10-CM diagnosis code for newborn esophageal reflux. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 794. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Neonatal digestive and feeding disorders.

Code Identity

ICD-10-CM Code
P78.83
Billable Status
Yes — Valid for Submission
Code Describes
Newborn esophageal reflux
Short Description
Newborn esophageal reflux
Same as the full description in the CMS dataset.
Parent Code
Other specified perinatal digestive system disorders

Code Classification

ChapterP00–P96Certain conditions originating in the perinatal period
SectionP76-P78Digestive system disorders of newborn
CategoryP78Other perinatal digestive system disorders
This CodeP78.83Newborn esophageal reflux

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Acid reflux
  • Digestive system reflux
  • Duodenogastric reflux
  • Esophageal reflux finding
  • Esophagogastric ulcer
  • Excessive gastric reflux
  • Finding of esophageal function
  • Gastric reflux
  • Gastroesophageal reflux disease
  • Gastroesophageal reflux disease with apnea
  • Gastroesophageal reflux disease with ulcer
  • Gastroesophageal reflux disease without esophagitis
  • Gastroesophageal reflux in child
  • Hiatal hernia with gastroesophageal reflux
  • Laryngitis due to gastroesophageal reflux
  • Laryngopharyngeal reflux
  • Minimal gastric reflux
  • Moderate gastric reflux
  • Neonatal gastroesophageal reflux
  • Non-erosive gastro-esophageal reflux disease

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to P78.83: its own notes plus those printed at P78 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

Applicable To

Conditions this code is used for: synonyms of the title or, for "other specified" codes, the conditions assigned to it. The list is not exhaustive.

  • Neonatal esophageal reflux

Excludes1

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

From P78 Other perinatal digestive system disorders 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 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 P78.83, its category, or a range that includes it.

Excludes1 1

These codes carry an Excludes1 note naming P78.83: they are not reported together with it, unless the two conditions are unrelated.

  • K21 Gastro-esophageal reflux disease
    newborn esophageal reflux (P78.83)

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

Reflux in Infants

Gastroesophageal reflux (GER), often called reflux or spitting up, happens when food or milk comes back up from your baby's stomach into the esophagus. The esophagus is the tube that carries food from your mouth to your stomach. Reflux is very common in healthy babies.

The full article covers:

  • What is reflux (GER) and GERD?
  • What causes reflux and GERD in infants?
  • How common are reflux and GERD in infants?
  • What are the symptoms of reflux and GERD in infants?
  • How are reflux and GERD diagnosed in infants?
  • What feeding changes can help treat my infant's reflux or GERD?
  • What are the treatments for my infant's GERD?

Read the full article at MedlinePlus

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

Convert P78.83 to ICD-9-CMHistory

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

ICD-9-CM
777.8 Perinat GI sys dis NEC
Approximate The match is approximate rather than exact.

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 P78.83Overview

What is the ICD-10 code for newborn esophageal reflux?

The ICD-10-CM code for newborn esophageal reflux is P78.83 (sometimes written as P7883). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

Is P78.83 (Other specified perinatal digestive system disorders) a billable code?

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

What MS-DRG does P78.83 group to?

When newborn esophageal reflux is the principal diagnosis on an inpatient stay, it groups to MS-DRG 794 (neonate with Other Significant Problems), which carries a relative weight of 1.4934. Higher weights mean higher Medicare reimbursement.

What is the ICD-9 equivalent of P78.83?

Under the General Equivalence Mappings, newborn esophageal reflux converts to ICD-9-CM 777.8 (perinat GI sys dis NEC). The mapping is approximate, so confirm the match fits the documentation.