2026 ICD-10-CM Diagnosis Code P39.1Neonatal conjunctivitis and dacryocystitis

ICD-10-CM Codes›P00–P96›P35-P39›P39

ICD-10-CM P39.1
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

P39.1 is a billable ICD-10-CM diagnosis code for neonatal conjunctivitis and dacryocystitis. 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 Perinatal infections.

Code Identity

ICD-10-CM Code
P39.1
Billable Status
Yes — Valid for Submission
Code Describes
Neonatal conjunctivitis and dacryocystitis
Short Description
Neonatal conjunctivitis and dacryocystitis
Same as the full description in the CMS dataset.
Parent Code
P39
Other infections specific to the perinatal period

Code Classification

ChapterP00–P96Certain conditions originating in the perinatal period
SectionP35-P39Infections specific to the perinatal period
CategoryP39Other infections specific to the perinatal period
This CodeP39.1Neonatal conjunctivitis and dacryocystitis

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Bacterial conjunctivitis
  • Bilateral chlamydial conjunctivitis
  • Bilateral conjunctivitis
  • Bilateral infectious conjunctivitis
  • Bilateral neonatal conjunctivitis of eyes
  • Chlamydial conjunctivitis
  • Chronic chlamydial follicular conjunctivitis
  • Chronic follicular conjunctivitis
  • Coliform ophthalmia neonatorum
  • Conjunctivitis
  • Conjunctivitis of bilateral eyes caused by bacteria
  • Conjunctivitis of left eye
  • Conjunctivitis of left eye caused by bacteria
  • Conjunctivitis of left eye caused by Chlamydia trachomatis
  • Conjunctivitis of right eye
  • Conjunctivitis of right eye caused by bacteria
  • Dacryocystitis of left lacrimal sac
  • Follicular conjunctivitis
  • Herpes simplex conjunctivitis
  • Infection of conjunctiva of left eye
  • Infection of conjunctiva of right eye
  • Infective conjunctivitis
  • Lacrimal punctum inflamed
  • Neonatal bacterial conjunctivitis
  • Neonatal bacterial dacryocystitis
  • Neonatal chlamydial conjunctivitis
  • Neonatal chlamydial dacryocystitis
  • Neonatal chlamydial infection
  • Neonatal colibacillosis
  • Neonatal conjunctivitis
  • Neonatal conjunctivitis of left eye
  • Neonatal conjunctivitis of right eye
  • Neonatal dacryocystitis
  • Neonatal dacryocystitis and conjunctivitis
  • Neonatal dacryocystitis caused by Escherichia coli
  • Neonatal dacryocystitis caused by Staphylococcus
  • Neonatal dacryocystitis or conjunctivitis caused by chlamydiae
  • Neonatal dacryocystitis or conjunctivitis caused by Escherichia coli
  • Neonatal dacryocystitis or conjunctivitis caused by Staphylococcus
  • Neonatal dacryocystitis or conjunctivitis caused by virus
  • Neonatal herpes simplex virus conjunctivitis
  • Neonatal infection of nasolacrimal duct caused by bacterium
  • Neonatal infection of nasolacrimal duct caused by Pseudomonas
  • Neonatal infection of the eye
  • Neonatal pseudomonas infection
  • Neonatal viral conjunctivitis
  • Neonatal viral dacryocystitis
  • Parasitic conjunctivitis
  • Protozoal conjunctivitis
  • Pseudomonas ophthalmia neonatorum
  • Rhinoconjunctivitis
  • Staphylococcal eye infection
  • Staphylococcal ophthalmia neonatorum
  • Trachoma

Tabular List NotesGuidance

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

Inclusion Terms

  • Neonatal chlamydial conjunctivitis
  • Ophthalmia neonatorum NOS

Type 1 Excludes

  • gonococcal conjunctivitis A54.31

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.

    • Blennorrhea(acute) (chronic)
      • inclusion (neonatal) (newborn)
    • Conjunctivitis(staphylococcal) (streptococcal) NOS
      • chlamydial
        • neonatal
    • Conjunctivitis(staphylococcal) (streptococcal) NOS
      • infantile
    • Conjunctivitis(staphylococcal) (streptococcal) NOS
      • neonatal
    • Dacryocystitis
      • neonatal
    • Inclusion
      • blennorrhea (neonatal) (newborn)
    • Ophthalmia
      • neonatorum, newborn

Clinical ClassificationClinical

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

CCSR PNL009
Perinatal infections
Default principal diagnosis: inpatient Yes · outpatient Yes

Clinical InformationClinical

  • Trachoma

    a chronic infection of the conjunctiva and cornea caused by chlamydia trachomatis.

  • Conjunctivitis

    inflammation of the conjunctiva.

  • Conjunctivitis, Acute Hemorrhagic

    a highly contagious disease characterized by subconjunctival hemorrhage, sudden swelling of the eyelids and congestion, redness, and pain in the eye. epidemic conjunctivitis caused by enterovirus 70 (ev-70) was first described in africa in 1969. it is caused also by coxsackievirus a24 variant (ca24v). epidemics by this organism have appeared most frequently in asia.

  • Conjunctivitis, Allergic

    conjunctivitis due to hypersensitivity to various allergens.

  • Conjunctivitis, Bacterial

    purulent infections of the conjunctiva by several species of gram-negative, gram-positive, or acid-fast organisms. some of the more commonly found genera causing conjunctival infections are haemophilus, streptococcus, neisseria, and chlamydia.

  • Conjunctivitis, Inclusion

    an infection of the eyes characterized by the presence in conjunctival epithelial cells of inclusion bodies indistinguishable from those of trachoma. it is acquired by infants during birth and by adults from swimming pools. the etiological agent is chlamydia trachomatis whose natural habitat appears to be the genito-urinary tract. inclusion conjunctivitis is a less severe disease than trachoma and usually clears up spontaneously.

  • Conjunctivitis, Viral

    inflammation, often mild, of the conjunctiva caused by a variety of viral agents. conjunctival involvement may be part of a systemic infection.

  • Chlamydia trachomatis

    type species of chlamydia causing a variety of ocular and urogenital diseases.

  • Chlamydia Trachomatis Antigen Measurement|CTRAG|Chlamydia trachomatis Antigen|Chlamydia trachomatis Antigen

    the determination of the chlamydia trachomatis antigen present in a sample.

  • Chlamydia trachomatis DNA Measurement|CTRDNA|Chlamydia trachomatis DNA|Chlamydia trachomatis DNA

    the determination of the amount of chlamydia trachomatis dna present in a sample.

  • Chlamydia trachomatis IgA Antibody Measurement

    the determination of the amount of chlamydia trachomatis iga antibody present in a sample.

  • Chlamydia trachomatis IgG Antibody Measurement

    the determination of the amount of chlamydia trachomatis igg antibody present in a sample.

  • Chlamydia trachomatis IgM Antibody Measurement

    the determination of the amount of chlamydia trachomatis igm antibody present in a sample.

  • Chlamydia trachomatis Measurement|CTR|Chlamydia trachomatis|Chlamydia trachomatis

    the determination of the amount of chlamydia trachomatis in a biological sample.

  • Chlamydia Trachomatis RNA Measurement|CTRRNA|Chlamydia trachomatis RNA|Chlamydia trachomatis RNA

    the determination of the amount of chlamydia trachomatis rna in a biological sample.

  • Chlamydia trachomatis|CHLAMYDIA TRACHOMATIS|CHLAMYDIA TRACHOMATIS

    a species of facultatively aerobic, gram-negative, coccobacilli assigned to the phylum chlamydiae. this species cannot be grown on an artificial medium, lacks peptidoglycan within the cell wall, forms elementary and reticulate bodies and can be identified using monoclonal antibodies (mabs) to epitopes in the vs 4 region of momp along with dna sequencing. c. trachomatis is an obligate intracellular parasite that can be transmitted through sexual contact causing infections of the genital tract and rectum and infertility in women, as well as cause eye infections.

  • Neonatal Chlamydia Conjunctivitis|Neonatal Chlamydial Conjunctivitis|Neonatal Inclusion Conjunctivitis|Neonatal Trachoma

    inflammation of the conjunctiva in a newborn due to chlamydia trachomatis which was acquired during labor and delivery.

  • Trachoma

    a bacterial infection of the eye caused by chlamydia trachomatis.

  • Chronic Follicular Conjunctivitis

    follicular conjunctivitis caused by chlamydia trachomatis, moraxella, borrelia, molluscum contagiosum, or toxicity from eye make-up and eye drops.

  • Acute Adenoviral Follicular Conjunctivitis|Acute adenoviral follicular conjunctivitis

    acute follicular conjunctivitis caused by adenovirus.

  • Acute Follicular Conjunctivitis

    follicular conjunctivitis caused by viruses and a few bacteria (e.g., chlamydia).

  • Follicular Conjunctivitis

    inflammation of the conjunctiva characterized by the presence of reactive lymphoid aggregates in the conjunctiva substantia propria. it presents with multiple rounded elevations of the conjunctiva.

  • Bacterial Conjunctivitis

    inflammation of the conjunctiva caused by a variety of bacterial agents.

  • Neonatal Dacryocystitis

    inflammation of the lacrimal sac in a newborn due to blocked drainage of tears or infection.

Patient EducationClinical

Eye Infections

Your eyes can get infections from bacteria, fungi, or viruses. Eye infections can occur in different parts of the eye and can affect just one eye or both. Two common eye infections are:

Read the full article at MedlinePlus

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

Convert P39.1 to ICD-9-CMHistory

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

ICD-9-CM
771.6 Neonatal conjunctivitis
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 P39.1Overview

Is P39.1 (Other infections specific to the perinatal period) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report neonatal conjunctivitis and dacryocystitis on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What is the ICD-9 equivalent of P39.1?

Under the General Equivalence Mappings, neonatal conjunctivitis and dacryocystitis converts to ICD-9-CM 771.6 (neonatal conjunctivitis). 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.