2027 ICD-10-CM Diagnosis Code P39.1Neonatal conjunctivitis and dacryocystitis
ICD-10-CM Codes›P00–P96›P35-P39›P39
- Billable — Valid for Submission
- Not Chronic
P39.1 is a billable ICD-10-CM diagnosis code for neonatal conjunctivitis and dacryocystitis. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 794. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Perinatal infections.
Code Identity
Code Classification
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
Instructional NotesGuidance
Instructions from the official ICD-10-CM Tabular List that apply to P39.1: its own notes plus those printed at P39, block P35-P39, 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.
- 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 chlamydial conjunctivitis
- Ophthalmia neonatorum NOS
Excludes1
Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.
- gonococcal conjunctivitis (A54.31)
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.
- asymptomatic human immunodeficiency virus [HIV] infection status (Z21)
- congenital gonococcal infection (A54.-)
- congenital pneumonia (P23.-)
- congenital syphilis (A50.-)
- human immunodeficiency virus [HIV] disease (B20)
- infant botulism (A48.51)
- infectious diseases not specific to the perinatal period (A00-B99, J09, J10.-)
- intestinal infectious disease (A00-A09)
- laboratory evidence of human immunodeficiency virus [HIV] (R75)
- tetanus neonatorum (A33)
Use Additional Code
Add a second code, after this one, to fully describe the condition.
- code to identify organism or specific infection
Notes
General instructions on how these codes are used.
- 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 P39.1, its category, or a range that includes it.
Excludes1 4
These codes carry an Excludes1 note naming P39.1: they are not reported together with it, unless the two conditions are unrelated.
- A56 Other sexually transmitted chlamydial diseasesneonatal chlamydial conjunctivitis (P39.1)
- A74 Other diseases caused by chlamydiaeneonatal chlamydial conjunctivitis (P39.1)
- H04.3 Acute and unspecified inflammation of lacrimal passagesneonatal dacryocystitis (P39.1)
- H10.3 Unspecified acute conjunctivitisophthalmia neonatorum NOS (P39.1)
Excludes2 2
These codes carry an Excludes2 note naming P39.1: its condition is not part of those codes, and both may be reported when the patient has both.
- Chapter 1 (A00-B99) Certain infectious and parasitic diseases
- P00.2 Newborn affected by maternal infectious and parasitic diseases
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
Blennorrhea (acute) (chronic) See Also: Gonorrhea;
neonatal P39.1
Ophthalmia See Also: Conjunctivitis; H10.9
neonatorum, newborn P39.1
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
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.
Code HistoryHistory
Questions About P39.1Overview
What is the ICD-10 code for neonatal conjunctivitis and dacryocystitis?
The ICD-10-CM code for neonatal conjunctivitis and dacryocystitis is P39.1 (sometimes written as P391). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
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, 2026 through September 30, 2027.
What MS-DRG does P39.1 group to?
When neonatal conjunctivitis and dacryocystitis is the principal diagnosis on an inpatient stay, it groups to MS-DRG 794 (neonate with Other Significant Problems), which carries a relative weight of 1.4934. Higher weights mean higher Medicare reimbursement.
Can P39.1 be reported with A54.31?
Not as a rule. The Excludes1 note on P39.1 lists "gonococcal conjunctivitis (A54.31)". 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).
Does P39.1 need an additional code?
When the condition applies, yes. The Use Additional Code note at P39, which applies to P39.1, reads: code to identify organism or specific infection. The additional code is reported after P39.1.
