P05.1 — Newborn small for gestational age

Not billable

Is P05.1 billable?

No — P05.1 is a non-billable header code. P05.1 groups more specific codes and cannot be submitted on a claim. A valid ICD-10-CM code must be reported at the highest level of specificity available in its branch. Select one of the 10 billable codes beneath P05.1.

Billable codes under this header

P05.1 at a glance

Code	P05.1
Description	Newborn small for gestational age
Billable	No — header code
Code set	ICD-10-CM FY2027
Valid for encounters	October 1, 2026 – September 30, 2027

How is P05.1 listed in the Alphabetic Index?

These are the routes through the Alphabetic Index that lead to P05.1. They show the wording a clinician may have documented, which often differs from the Tabular description.

Weight › and length below 10th percentile for gestational age

Inclusion terms

Alternative wording in documentation that is classified to P05.1.

Newborn small-and-light-for-dates
Newborn small-for-dates
Weight and length below 10th percentile for gestational age

Excludes2 — not included here — inherited from Chapter 16

The conditions below are not part of P05.1, but a patient may have both at the same time. When documentation supports it, P05.1 and the excluded code may both be reported.

congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
endocrine, nutritional and metabolic diseases (E00-E88)
injury, poisoning and certain other consequences of external causes (S00-T88)
neoplasms (C00-D49)
tetanus neonatorum (A33)

What codes fall under P05.1? (10)

How long has P05.1 existed?

P05.1 has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.

Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.