Other infections specific to the perinatal period (P39) ICD-10-CM
The P39 code range covers other infections specific to the perinatal period with 8 ICD-10-CM diagnosis codes. 7 of them are billable and valid for claim submission in fiscal year 2026, and the category headers group them but cannot themselves be billed.
Use Additional Code
The “use additional code” indicates that a secondary code could be used to further specify the patient’s condition. This note is not mandatory and is only used if enough information is available to assign an additional code.
- code to identify organism or specific infection
Codes in the P39 Range 8 codes · 7 billable
- P39 Other infections specific to the perinatal periodNon-billable
- P39.0 Neonatal infective mastitis
- P39.1 Neonatal conjunctivitis and dacryocystitis
- P39.2 Intra-amniotic infection affecting newborn, not elsewhere classified
- P39.3 Neonatal urinary tract infection
- P39.4 Neonatal skin infection
- P39.8 Other specified infections specific to the perinatal period
- P39.9 Infection specific to the perinatal period, unspecified
Clinical Terms in This Code Range
Definitions from the National Library of Medicine for conditions coded in the P39 range.
Chlamydia trachomatis
Type species of CHLAMYDIA causing a variety of ocular and urogenital diseases.
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.
Ecthyma
An ulcerative pyoderma usually caused by group A beta-hemolytic streptococcal infection at the site of minor trauma. (Dorland, 27th ed)
Ecthyma, Contagious
An infectious dermatitis of sheep and goats, affecting primarily the muzzle and lips. It is caused by a poxvirus and may be transmitted to man.
Mastectomy
Surgical procedure to remove one or both breasts.
Orf virus
The type species of PARAPOXVIRUS which causes a skin infection in natural hosts, usually young sheep. Humans may contract local skin lesions by contact. The virus apparently persists in soil.
Parapoxvirus
A genus of the family POXVIRIDAE, subfamily CHORDOPOXVIRINAE, which infect ungulates and may infect humans. ORF VIRUS is the type species.
Pyoderma
Any purulent skin disease (Dorland, 27th ed).
Pyoderma Gangrenosum
An idiopathic, rapidly evolving, and severely debilitating disease occurring most commonly in association with chronic ulcerative colitis. It is characterized by the presence of boggy, purplish ulcers with undermined borders, appearing mostly on the legs. The majority of cases are in people between 40 and 60 years old. Its etiology is unknown.
Seroma
Tumor-like sterile accumulation of serum in a tissue, organ, or cavity. It results from a tissue insult and is the product of tissue inflammation. It most commonly occurs following MASTECTOMY.
Trachoma
A chronic infection of the CONJUNCTIVA and CORNEA caused by CHLAMYDIA TRACHOMATIS.
About the P39 Code Range
The ICD-10 code section P39 covers other infections specific to the perinatal period, detailing infections that occur in newborns around the time of birth. These codes are used to classify a range of infectious conditions affecting neonates, helping healthcare professionals document and treat these specialized early-life infections.
This section includes specific codes such as P39.0 for neonatal infective mastitis, which is also known as neonatal staphylococcal mastitis or neonatal breast infection. P39.1 covers neonatal conjunctivitis and dacryocystitis, common terms for eye infections in newborns like bacterial or chlamydial conjunctivitis. P39.3 is for neonatal urinary tract infections caused by bacteria such as Escherichia coli or Pseudomonas. P39.4 addresses neonatal skin infections including infected abrasions and superficial wounds, while P39.8 captures other specified infections like neonatal necrotizing fasciitis or perinatal staphylococcal infections. The category P39.9 is designated for unspecified infections occurring during the perinatal period. These codes assist in accurately identifying infections unique to the perinatal timeframe, ensuring appropriate clinical care and coding accuracy for early neonatal infections.
Questions About This Page
How many billable codes are in the P39 range?
Of the 8 codes in this range, 7 are billable and valid for claim submission from October 1, 2025 through September 30, 2026. Category header codes group them but cannot be reported on claims.
What does the P39 range classify?
The range classifies other infections specific to the perinatal period. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.
Related References
Source: CMS FY 2026 ICD-10-CM Tabular List and order file, effective October 1, 2025 through September 30, 2026.
