2027 ICD-10-CM Diagnosis Code P72.1Transitory neonatal hyperthyroidism

ICD-10-CM Codes›P00–P96›P70-P74›P72

ICD-10-CM P72.1
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

P72.1 is a billable ICD-10-CM diagnosis code for transitory neonatal hyperthyroidism. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 791, 793. As a secondary diagnosis, it counts as a complication or comorbidity (CC) and moves an inpatient stay to a higher severity level within its MS-DRG family. It does not count, however, when the principal diagnosis is one of 44 closely related codes. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Other specified and unspecified perinatal conditions.

Code Identity

ICD-10-CM Code
P72.1
Billable Status
Yes — Valid for Submission
Code Describes
Transitory neonatal hyperthyroidism
Short Description
Transitory neonatal hyperthyroidism
Same as the full description in the CMS dataset.
Parent Code
P72
Other transitory neonatal endocrine disorders

Code Classification

ChapterP00–P96Certain conditions originating in the perinatal period
SectionP70-P74Transitory endocrine and metabolic disorders specific to newborn
CategoryP72Other transitory neonatal endocrine disorders
This CodeP72.1Transitory neonatal hyperthyroidism

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Endocrine myopathy
  • Graves' disease
  • Hyperthyroidism
  • Neonatal goiter
  • Neonatal Graves' disease
  • Neonatal thyrotoxicosis
  • Neonatal transient hyperthyroidism
  • Subclinical disease AND/OR syndrome
  • Subclinical hyperthyroidism
  • Thyrotoxic myopathy
  • Thyrotoxicosis
  • Thyrotoxicosis with or without goiter

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to P72.1: its own notes plus those printed at P72, block P70-P74, 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 Block P70-P74 Transitory endocrine and metabolic disorders specific to newborn applies to 33 codes
  • transitory endocrine and metabolic disturbances caused by the infant's response to maternal endocrine and metabolic factors, or its adjustment to extrauterine environment
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 thyrotoxicosis

Excludes1

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

From P72 Other transitory neonatal endocrine disorders applies to 5 codes
  • congenital hypothyroidism with or without goiter (E03.0-E03.1)
  • dyshormogenetic goiter (E07.1)
  • dyshormonogenetic goiter (E07.1)
  • Pendred's syndrome (E07.1)

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 P72.1, its category, or a range that includes it.

Excludes1 2

These codes carry an Excludes1 note naming P72.1: they are not reported together with it, unless the two conditions are unrelated.

  • E05 Thyrotoxicosis [hyperthyroidism]
    neonatal thyrotoxicosis (P72.1)
  • Chapter 4 (E00-E89) Endocrine, nutritional and metabolic diseases
    transitory endocrine and metabolic disorders specific to newborn (P70-P74) names P70-P74, which includes this code

Excludes2 1

These codes carry an Excludes2 note naming P72.1: its condition is not part of those codes, and both may be reported when the patient has both.

  • P00 Newborn affected by maternal conditions that may be unrelated to present pregnancy
    newborn affected by maternal endocrine and metabolic disorders (P70-P74) names P70-P74, 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 PNL013
Other specified and unspecified perinatal conditions
Default principal diagnosis: inpatient Yes · outpatient Yes

Patient EducationClinical

Hyperthyroidism

Hyperthyroidism, or overactive thyroid, happens when your thyroid gland makes more thyroid hormones than your body needs.

The full article covers:

  • What is hyperthyroidism?
  • What causes hyperthyroidism?
  • Who is at risk for hyperthyroidism?
  • What are the symptoms of hyperthyroidism?
  • What other problems can hyperthyroidism cause?
  • How is hyperthyroidism diagnosed?
  • What are the treatments for hyperthyroidism?

Read the full article at MedlinePlus

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

Convert P72.1 to ICD-9-CMHistory

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

ICD-9-CM
775.3 Neonatal thyrotoxicosis
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 P72.1Overview

What is the ICD-10 code for transitory neonatal hyperthyroidism?

The ICD-10-CM code for transitory neonatal hyperthyroidism is P72.1 (sometimes written as P721). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

Is P72.1 (Other transitory neonatal endocrine disorders) a billable code?

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

What MS-DRG does P72.1 group to?

When transitory neonatal hyperthyroidism is the principal diagnosis on an inpatient stay, it groups to MS-DRG 793, 791, with relative weights from 4.1073 to 4.2192 depending on complications. Higher weights mean higher Medicare reimbursement.

Is P72.1 a CC or MCC?

CMS lists P72.1 as a CC (complication or comorbidity) for FY 2027. Reported as a secondary diagnosis, it moves the inpatient stay to a higher-weighted DRG within its severity family. It does not count when the principal diagnosis is one of the 44 closely related codes in its exclusion list.

Can P72.1 be reported with E07.1?

Not as a rule. The Excludes1 note at P72, which applies to P72.1, lists "dyshormogenetic goiter (E07.1)". 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).