2026 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 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

P72.1 is a billable ICD-10-CM diagnosis code for transitory neonatal hyperthyroidism. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026). 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

Tabular List NotesGuidance

Coding notes and annotation back-references applicable to this code.

Inclusion Terms

  • Neonatal thyrotoxicosis

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

External Cause of Injuries IndexGuidance

References for this code in the External Cause of Injuries Index.

    • Hyperthyroidism(latent) (pre-adult) (recurrent)
      • neonatal, transitory
    • Thyrotoxicosis(recurrent)
      • neonatal (transient)

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

Clinical InformationClinical

  • Graves Disease

    a common form of hyperthyroidism with a diffuse hyperplastic goiter. it is an autoimmune disorder that produces antibodies against the thyroid stimulating hormone receptor. these autoantibodies activate the tsh receptor, thereby stimulating the thyroid gland and hypersecretion of thyroid hormones. these autoantibodies can also affect the eyes (graves ophthalmopathy) and the skin (graves dermopathy).

  • Hyperthyroidism

    hypersecretion of thyroid hormones from the thyroid gland. elevated levels of thyroid hormones increase basal metabolic rate.

  • Thyrotoxicosis

    a hypermetabolic syndrome caused by excess thyroid hormones which may come from endogenous or exogenous sources. the endogenous source of hormone may be thyroid hyperplasia; thyroid neoplasms; or hormone-producing extrathyroidal tissue. thyrotoxicosis is characterized by nervousness; tachycardia; fatigue; weight loss; heat intolerance; and excessive sweating.

  • Chronic Thyroiditis with Transient Thyrotoxicosis|Chronic thyroiditis with transient thyrotoxicosis

    persistent and long-standing thyroiditis associated with temporary elevations of thyroid hormones.

  • Neonatal Thyrotoxicosis|Infantile Hyperthyroidism

    a hypermetabolic syndrome characterized by tachycardia, palpitations, tremor, weight loss, and moist skin that is caused by the elevation of thyroid hormone levels in the serum of the newborn infant or thyroid-axis receptor activation, most commonly due to transplacental passage of thyroid stimulating globulins.

  • Other Thyrotoxicosis with Thyrotoxic Crisis or Storm|Other thyrotoxicosis with thyrotoxic crisis or storm

    evidence of other thyrotoxicosis with thyrotoxic crisis or storm not specified elsewhere.

  • Other Thyrotoxicosis without Thyrotoxic Crisis or Storm|Other thyrotoxicosis without thyrotoxic crisis or storm

    evidence of other thyrotoxicosis without thyrotoxic crisis or storm not specified elsewhere.

  • Thyrotoxicosis

    a hypermetabolic syndrome caused by the elevation of thyroid hormone levels in the serum. signs and symptoms include tachycardia, palpitations, tremor, weight loss, warm weather intolerance, and moist skin. causes include graves disease, toxic nodular goiter, toxic thyroid nodule, and lymphocytic thyroiditis.

  • Thyrotoxicosis Factitia with Thyrotoxic Crisis or Storm|Thyrotoxicosis factitia with thyrotoxic crisis or storm

    evidence of thyrotoxicosis factitia with thyrotoxic crisis or storm.

  • Thyrotoxicosis Factitia without Thyrotoxic Crisis or Storm|Thyrotoxicosis factitia without thyrotoxic crisis or storm

    evidence of thyrotoxicosis factitia without thyrotoxic crisis or storm.

  • Thyrotoxicosis from Ectopic Thyroid Tissue with Thyrotoxic Crisis|Thyrotoxicosis from ectopic thyroid tissue with thyrotoxic crisis

    evidence of thyrotoxicosis from ectopic thyroid tissue with thyrotoxic crisis.

  • Thyrotoxicosis from Ectopic Thyroid Tissue without Thyrotoxic Crisis|Thyrotoxicosis from ectopic thyroid tissue without thyrotoxic crisis

    evidence of thyrotoxicosis from ectopic thyroid tissue without thyrotoxic crisis.

  • Thyrotoxicosis with Diffuse Goiter with Thyrotoxic Crisis or Storm|Thyrotoxicosis with diffuse goiter with thyrotoxic crisis or storm

    evidence of thyrotoxicosis with diffuse goiter with thyrotoxic crisis or storm.

  • Thyrotoxicosis with Diffuse Goiter without Thyrotoxic Crisis|Thyrotoxicosis with diffuse goiter without thyrotoxic crisis

    evidence of thyrotoxicosis with diffuse goiter without thyrotoxic crisis.

  • Thyrotoxicosis with Toxic Multinodular Goiter with Thyrotoxic Crisis|Thyrotoxicosis with toxic multinodular goiter with thyrotoxic crisis

    evidence of thyrotoxicosis with toxic multinodular goiter with thyrotoxic crisis.

  • Thyrotoxicosis with Toxic Multinodular Goiter without Thyrotoxic Crisis|Thyrotoxicosis with toxic multinodular goiter without thyrotoxic crisis

    evidence of thyrotoxicosis with toxic multinodular goiter without thyrotoxic crisis.

  • Thyrotoxicosis with Toxic Single Thyroid Nodule with Thyrotoxic Crisis|Thyrotoxicosis with toxic single thyroid nodule with thyrotoxic crisis

    evidence of thyrotoxicosis with toxic single thyroid nodule with thyrotoxic crisis.

  • Thyrotoxicosis with Toxic Single Thyroid Nodule without Thyrotoxic Crisis|Thyrotoxicosis with toxic sing thyroid nodule without thyrotoxic crisis

    evidence of thyrotoxicosis with toxic single thyroid nodule without thyrotoxic crisis.

  • Thyrotoxicosis, Unspecified with Thyrotoxic Crisis or Storm|Thyrotoxicosis, unspecified with thyrotoxic crisis or storm

    evidence of thyrotoxicosis, unspecified with thyrotoxic crisis or storm.

  • Thyrotoxicosis, Unspecified without Thyrotoxic Crisis or Storm|Thyrotoxicosis, unspecified without thyrotoxic crisis or storm

    evidence of thyrotoxicosis, unspecified without thyrotoxic crisis or storm.

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 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About P72.1Overview

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, 2025 through September 30, 2026.

What is the ICD-9 equivalent of P72.1?

Under the General Equivalence Mappings, transitory neonatal hyperthyroidism converts to ICD-9-CM 775.3 (neonatal thyrotoxicosis). The mapping is a direct match.

Footnotes

[1] Not chronic - A diagnosis code that does not fit the criteria for chronic condition (duration, ongoing medical treatment, and limitations) is considered not chronic. Some codes designated as not chronic are acute conditions. Other diagnosis codes that indicate a possible chronic condition, but for which the duration of the illness is not specified in the code description (i.e., we do not know the condition has lasted 12 months or longer) also are considered not chronic.