2026 ICD-10-CM Diagnosis Code Q87.3Congenital malformation syndromes involving early overgrowth

ICD-10-CM Codes›Q00-Q99›Q80-Q89›Q87

ICD-10-CM Q87.3
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

Q87.3 is a billable ICD-10-CM diagnosis code for congenital malformation syndromes involving early overgrowth. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 564 through 566. The code is exempt from POA reporting. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Other specified and unspecified congenital anomalies.

Code Identity

ICD-10-CM Code
Q87.3
Billable Status
Yes — Valid for Submission
Code Describes
Congenital malformation syndromes involving early overgrowth
Short Description
Congenital malformation syndromes involving early overgrowth
Same as the full description in the CMS dataset.
Parent Code
Q87
Other specified congenital malformation syndromes affecting multiple systems

Code Classification

ChapterQ00-Q99Congenital malformations, deformations and chromosomal abnormalities
SectionQ80-Q89Other congenital malformations
CategoryQ87Other specified congenital malformation syndromes affecting multiple systems
This CodeQ87.3Congenital malformation syndromes involving early overgrowth

Present on Admission (POA)Billing

Q87.3 is exempt from POA reporting on inpatient claims to general acute care hospitals. Review other POA exempt codes.

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • 15q overgrowth syndrome
  • Angio-osteohypertrophic syndrome
  • Autosomal translocation
  • Beckwith-Wiedemann syndrome
  • CHD8 overgrowth syndrome
  • CLAPO syndrome
  • Congenital macroglossia
  • Congenital omphalocele
  • Congenital overgrowth of foot
  • Congenital umbilical hernia
  • Diffuse capillary malformation with overgrowth
  • DNMT3A-related overgrowth syndrome
  • Gigantism
  • Global developmental delay, lung cysts, overgrowth, Wilms tumor syndrome
  • Hemihyperplasia with multiple lipomatosis syndrome
  • Klippel Trenaunay syndrome
  • Kosaki overgrowth syndrome
  • Lipomatosis of subcutaneous tissue
  • Luscan Lumish syndrome
  • Macrodactyly of toe
  • Macroencephaly
  • Macrosomia, microphthalmia, cleft palate syndrome
  • Malan overgrowth syndrome
  • Marshall-Smith syndrome
  • Megalencephaly, severe kyphoscoliosis, overgrowth syndrome
  • Multiple malformation syndrome with early overgrowth
  • Nephroblastoma
  • Overgrowth syndrome with 2q37 translocation
  • Overgrowth, macrocephaly, facial dysmorphism syndrome
  • Overgrowth, metaphyseal undermodeling, spondylar dysplasia syndrome
  • Parkes Weber syndrome
  • Partial duplication of long arm of chromosome 15
  • Partial trisomy of chromosome 15
  • Perlman syndrome
  • PIK3CA related overgrowth syndrome
  • Port-wine stain of skin
  • Segmental progressive overgrowth syndrome with fibroadipose hyperplasia
  • Simpson-Golabi-Behmel syndrome
  • Tall stature, intellectual disability, renal anomalies syndrome
  • Tall stature, scoliosis, macrodactyly of great toe syndrome
  • Weaver syndrome

Tabular List NotesGuidance

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

Inclusion Terms

  • Beckwith-Wiedemann syndrome
  • Sotos syndrome
  • Weaver syndrome

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.

    • Beckwith-Wiedemann syndrome
    • Soto's syndrome(cerebral gigantism)
    • Syndrome
      • Soto's
    • Weaver's syndrome

Clinical ClassificationClinical

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

CCSR MAL010
Other specified and unspecified congenital anomalies
Default principal diagnosis: inpatient Yes · outpatient Yes

Clinical InformationClinical

  • Gigantism

    the condition of accelerated and excessive growth in children or adolescents who are exposed to excess human growth hormone before the closure of epiphyses. it is usually caused by somatotroph hyperplasia or a growth hormone-secreting pituitary adenoma. these patients are of abnormally tall stature, more than 3 standard deviations above normal mean height for age.

  • Sotos Syndrome

    congenital or postnatal overgrowth syndrome most often in height and occipitofrontal circumference with variable delayed motor and cognitive development. other associated features include advanced bone age, seizures, neonatal jaundice; hypotonia; and scoliosis. it is also associated with increased risk of developing neoplasms in adulthood. mutations in the nsd1 protein and its haploinsufficiency are associated with the syndrome.

Patient EducationClinical

Birth Defects

A birth defect is a problem that happens while a baby is developing in the mother's body. Most birth defects happen during the first 3 months of pregnancy. One out of every 33 babies in the United States is born with a birth defect.

The full article covers:

  • What are birth defects?
  • What causes birth defects?
  • Who is at risk of having a baby with birth defects?
  • How are birth defects diagnosed?
  • What are the treatments for birth defects?
  • Can birth defects be prevented?

Read the full article at MedlinePlus

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

Convert Q87.3 to ICD-9-CMHistory

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

ICD-9-CM
759.89 Specfied cong anomal 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 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About Q87.3Overview

Is Q87.3 a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report congenital malformation syndromes involving early overgrowth on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does Q87.3 group to?

When congenital malformation syndromes involving early overgrowth is the principal diagnosis on an inpatient stay, it groups to MS-DRG 564, 565, 566, with relative weights from 0.7493 to 1.5436 depending on complications. Higher weights mean higher Medicare reimbursement.

Is Q87.3 exempt from POA reporting?

Yes. CMS lists this code among those exempt from present on admission reporting, so hospitals do not assign a POA indicator for congenital malformation syndromes involving early overgrowth on inpatient claims.

What is the ICD-9 equivalent of Q87.3?

Under the General Equivalence Mappings, congenital malformation syndromes involving early overgrowth converts to ICD-9-CM 759.89 (specfied cong anomal NEC). The mapping is approximate, so confirm the match fits the documentation.

Footnotes

[1] Chronic - a chronic condition code indicates a condition lasting 12 months or longer and its effect on the patient based on one or both of the following criteria:

  • The condition results in the need for ongoing intervention with medical products,treatment, services, and special equipment
  • The condition places limitations on self-care, independent living, and social interactions.