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H04.32 vs P39.1

H04.32 (Acute dacryocystitis) compared with P39.1 (Neonatal conjunctivitis and dacryocystitis), from the official CMS tabular data.

Current data releases:ICD-10-CM FY2027 · ICD-10-PCS FY2027 · HCPCS October 2026 · MS-DRG v44 · Medicare Code Editor v44.0 · NCCI PTP Q4 2026 · MUE Q4 2026 · NCD code lists 2026-01 · LCD export September 28, 2026 · All releases and sources

Summary

These codes should not be reported together because H04.32’s tabular entry lists P39.1 under Excludes1.

Official rule
What is different?

The conditions named, billing status and chapter.H04.32 is “Acute dacryocystitis”; P39.1 is “Neonatal conjunctivitis and dacryocystitis”. H04.32 is a non-billable header; P39.1 is billable. H04.32 sits in H00-H59 — Diseases of the Eye and Adnexa (H00-H59); P39.1 in P00-P96 — Certain Conditions Originating in the Perinatal Period (P00-P96).

Registry fact

Can these codes be reported together?

No.H04.32’s entry carries an Excludes1 note covering P39.1: “neonatal dacryocystitis (P39.1)”. Both may be reported only when the documentation shows the two conditions are unrelated to each other (ICD-10-CM Official Guidelines, Section I.A.12.a).

Official ruleGuide: Excludes1 vs Excludes2

Is there an Excludes1 relationship?

Yes.H04.32’s tabular entry: “neonatal dacryocystitis (P39.1)”. The note covers P39.1.

Official ruleGuide: Excludes1 vs Excludes2

Is there an Excludes2 relationship?

None.Neither entry carries an Excludes2 note that names the other code. H04.32 carries 2 Excludes2 notes and P39.1 carries 10 Excludes2 notes covering other codes; the side-by-side table quotes them.

Official rule

Is one more specific?

Not comparable.The codes sit in different categories; specificity is only comparable within one category.

Is one a parent or header code?

One is a header.H04.32 is a non-billable header, but P39.1 is not one of its subdivisions.

Registry fact

Are there sequencing instructions?

None.Neither entry carries a Code First or Use Additional Code note that names the other.

Official rule

Are there other coding relationships?

None found.No laterality, encounter-phase, Table of Neoplasms, Table of Drugs and Chemicals, or history-versus-active-disease relationship links these codes.

MedCoder-derived

Official rule: a tabular instructional note or a section of the ICD-10-CM Official Guidelines, quoted as published. Registry fact: the codes’ own published attributes (titles, billable status, position in the hierarchy, code set). MedCoder-derived: a reading MedCoder computes from those facts; it is not itself a rule. How to read the labels

Can these codes be reported together?

Excludes1 — generally not reported together

Excludes1 conflict

H04.32
Acute dacryocystitis
↔
P39.1
Neonatal conjunctivitis and dacryocystitis

What we found

No — do not report together.H04.32 carries an Excludes1 note covering P39.1: “neonatal dacryocystitis (P39.1)”

Sole exception: when the two conditions are documented as unrelated to each other (ICD-10-CM Official Guidelines, Section I.A.12.a).

What to review

Report one of the two. Both may be reported only when the documentation shows the two conditions are unrelated to each other.

Guide: Excludes1 vs Excludes2Check these on a claim

Why it matters

An Excludes1 note means the two conditions are not ordinarily reported together for the same encounter, because the classification treats them as mutually exclusive forms of the same condition. The documented exception is when the two conditions are unrelated to each other.

Source / rule

CMS ICD-10-CM tabular instructional notes; ICD-10-CM Official Guidelines, Section I.A.12.a

Official guidance behind these answers

  • Section I.A.12.a — Excludes1 · applies to: Excludes1

    A type 1 Excludes note is a pure excludes note. It means “NOT CODED HERE!” An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition. An exception to the Excludes1 definition is the circumstance when the two conditions are unrelated to each other. If it is not clear whether the two conditions involving an Excludes1 note are related or not, query the provider. For example, code F45.8, Other somatoform disorders, has an Excludes1 note for "sleep related teeth grinding (G47.63)," because "teeth grinding" is an inclusion term under F45.8. Only one of these two codes should be assigned for teeth grinding. However psychogenic dysmenorrhea is also an inclusion term under F45.8, and a patient could have both this condition and sleep related teeth grinding. In this case, the two conditions are clearly unrelated to each other, and so it would be appropriate to report F45.8 and G47.63 together.

    ICD-10-CM Official Guidelines FY2027

Quoted from the ICD-10-CM Official Guidelines for Coding and Reporting in effect for the release shown. The tabular notes above are the code-level instruction; these sections are the convention that says how such a note is applied. Source document (CMS PDF) · Release and checksum

Side by side

Similar descriptions do not make codes interchangeable. The documentation and the official instructions decide which code applies.

Official descriptionDiffers
H04.32

Acute dacryocystitis

P39.1

Neonatal conjunctivitis and dacryocystitis

StatusDiffers
H04.32
Non-billable header

A header is not reported on a claim; a code beneath it is.

Report instead: H04.321, H04.322, H04.323, H04.329

P39.1
Billable
Excludes1Differs
H04.32
  • neonatal dacryocystitis (P39.1)
  • congenital malformations of lacrimal system (Q10.4-Q10.6)
P39.1
  • gonococcal conjunctivitis (A54.31)
Excludes2Differs
H04.32
  • open wound of eyelid (S01.1-)
  • superficial injury of eyelid (S00.1-, S00.2-)
P39.1
  • 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 codeDiffers
H04.32

None at this code

P39.1
  • code to identify organism or specific infection
CategoryDiffers
H04.32

H04 Disorders of lacrimal system

P39.1

P39 Other infections specific to the perinatal period

ChapterDiffers
H04.32

H00-H59 — Diseases of the Eye and Adnexa (H00-H59)

P39.1

P00-P96 — Certain Conditions Originating in the Perinatal Period (P00-P96)

IncludesDiffers
H04.32
  • Acute dacryopericystitis
P39.1
  • Neonatal chlamydial conjunctivitis
  • Ophthalmia neonatorum NOS

No Code first, Code also and 7th character note at either code.

Notes are the code’s own tabular entry, quoted as published. A note that names the other code is the one the verdict above rests on. In a row that differs, notes every code shares are dimmed.

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Derived from the official CMS ICD-10-CM tabular data (FY2027). A coding-rule comparison, not billing advice: payer-specific edits and medical-necessity policy are outside its scope. All data sources