2026 ICD-10-CM Diagnosis Code O92.79Other disorders of lactation

ICD-10-CM Codes›O00-O9A›O85-O92›O92

ICD-10-CM O92.79
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

O92.79 is a billable ICD-10-CM diagnosis code for other disorders of lactation. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026). The code is restricted by the Medicare Code Editor to maternity cases (age 9 through 64). In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Complications specified during the puerperium.

Code Identity

ICD-10-CM Code
O92.79
Billable Status
Yes — Valid for Submission
Code Describes
Other disorders of lactation
Short Description
Other disorders of lactation
Same as the full description in the CMS dataset.
Parent Code
O92.7
Other and unspecified disorders of lactation

Code Classification

ChapterO00-O9APregnancy, childbirth and the puerperium
SectionO85-O92Complications predominantly related to the puerperium
CategoryO92Other disorders of breast and disorders of lactation associated with pregnancy and the puerperium
This CodeO92.79Other disorders of lactation

Code EditsBilling

Medicare Code Editor checks that affect claim validity for O92.79.

Maternity diagnoses
The Medicare Code Editor detects inconsistencies in maternity cases by checking a patient's age and any diagnosis on the patient's record. The maternity code edits apply to patients age ange is 9–64 years inclusive (e.g., diabetes in pregnancy, antepartum pulmonary complication).

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Breast engorgement in pregnancy, the puerperium or lactation
  • Difficulty performing breastfeeding
  • Difficulty positioning baby at breast for feeding
  • Does not perform breastfeeding
  • Does not position baby at breast for feeding
  • Engorgement of breasts
  • Engorgement of breasts associated with childbirth
  • Finding related to ability to perform breastfeeding
  • Finding related to ability to position baby at breast for feeding
  • Galactocele associated with childbirth
  • Increased lactation
  • Lactating adenoma of breast
  • Lactation not established
  • Lactocele
  • Milk engorgement of breast
  • Pain when milk coming in
  • Painful lactation
  • Unable to perform breastfeeding
  • Unable to position baby at breast for feeding

Tabular List NotesGuidance

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

Inclusion Terms

  • Puerperal galactocele

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.

    • Caked breast(puerperal, postpartum)
    • Disorder(of)
      • breast
        • associated with
          • lactation
            • specified NEC
    • Disorder(of)
      • breast
        • lactation disorder NEC
    • Disorder(of)
      • lactation NEC
    • Engorgement
      • breast
        • puerperal, postpartum
    • Galactocele(breast)
      • puerperal, postpartum
    • Lactation, lactating(breast) (puerperal, postpartum)
      • disorder NEC
    • Milk
      • retention
    • Retention
      • milk (puerperal, postpartum)

Clinical ClassificationClinical

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

CCSR PRG027
Complications specified during the puerperium
Default principal diagnosis: inpatient Yes · outpatient Yes

Clinical InformationClinical

  • Tetany

    sudden and involuntary contraction of a muscle of group of muscles due to hypocalcemia.

Patient EducationClinical

Breastfeeding

Breastfeeding offers many benefits to your baby. Breast milk contains the right balance of nutrients to help your infant grow into a strong and healthy toddler. Some of the nutrients in breast milk also help protect your infant against some common childhood illnesses and infections. It may also help your health.

Read the full article at MedlinePlus

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

Convert O92.79 to ICD-9-CMHistory

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

ICD-9-CM
676.82 Lactat dis NEC-del w p/p
Approximate The match is approximate rather than exact.
ICD-9-CM
676.84 Lactat dis NEC-postpart
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 O92.79Overview

Is O92.79 (Other and unspecified disorders of lactation) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report other disorders of lactation on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

Who can O92.79 be reported for?

The Medicare Code Editor checks other disorders of lactation against patient demographics: this code is intended for maternity cases (age 9 through 64). Claims outside these limits are flagged as inconsistent.

What is the ICD-9 equivalent of O92.79?

Under the General Equivalence Mappings, other disorders of lactation converts to ICD-9-CM 676.82 (lactat dis NEC-del w p/p) and 676.84 (lactat dis NEC-postpart). The mapping is approximate, so confirm the match fits the documentation.

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.