P05.10
Newborn small for gestational age, unspecified weight
P05.10 (also written P0510) is a billable ICD-10-CM diagnosis code for newborn small for gestational age, unspecified weight. It is part of the FY2027 code set, effective October 1, 2026. It is one of the 22 codes in category P05 (Disorders of newborn related to slow fetal growth and fetal malnutrition). The Alphabetic Index lists it under 1 entry. Its coding notes include 5 Excludes2 entries.
Guidelines tips
From the FY2027 Official Guidelines. ICD10Ref adds no rules of its own.
Chapter 16 codes are never used on the maternal record, and chapter 15 codes are never used on the newborn record. Chapter 16 codes can be used for life if the condition persists.
Prematurity is coded only when documented. When birth weight and gestational age are both available, two P07 codes are assigned, weight first. P07 can also apply to an older child or adult whose health is still affected.
Excludes2
Not included here. Both codes may be reported if the patient has both conditions.
Also from chapter/block level (5 notes)
- 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)
Includes
Further defines or gives examples of the content of the category.
Also from chapter/block level (1 note)
- 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
Notes
Also from chapter/block level (1 note)
- Codes from this chapter are for use on newborn records only, never on maternal records
Alphabetic Index terms
Terms the official Alphabetic Index lists for this code. 1 entry