P23.1 — Congenital pneumonia due to Chlamydia
P23.1 is a billable, specific ICD-10-CM code for congenital pneumonia due to chlamydia. It is valid for submission on a claim.
Other codes that can never be billed with P23.1
These codes carry an Excludes1 note pointing at P23.1. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading P23.1 alone.
Risk adjustment
P23.1 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.
How P23.1 is indexed
Coders do not find codes by browsing the tabular list — they look them up in the alphabetic index, under the word the physician wrote. These are the index entries that lead here, so you can see which chart wordings map to P23.1.
- Pneumonia›chlamydial›congenital
- Pneumonia›congenital›due to›Chlamydia
- Pneumonia›in›Chlamydia›neonatal
Related codes at this level
Codes that share P23. If P23.1 is not quite right, the correct code is usually one of these.
- P23.0Congenital pneumonia due to viral agent
- P23.2Congenital pneumonia due to staphylococcus
- P23.3Congenital pneumonia due to streptococcus, group B
- P23.4Congenital pneumonia due to Escherichia coli
- P23.5Congenital pneumonia due to Pseudomonas
- P23.6Congenital pneumonia due to other bacterial agents
- P23.8Congenital pneumonia due to other organisms
- P23.9Congenital pneumonia, unspecified
Questions about P23.1
- Is P23.1 a billable ICD-10-CM code?
- Yes. P23.1 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does P23.1 sit in the tabular list?
- Certain conditions originating in the perinatal period (P00-P96), in the block Respiratory and cardiovascular disorders specific to the perinatal period (P19-P29).