P07.21 Extreme immaturity of newborn, gestational age less than 23 completed weeks

Billable ICD-10-CM code, FY2026.

Applicable to

• Extreme immaturity of newborn, gestational age less than 23 weeks, 0 days

Applies from P07 Disorders of newborn related to short gestation and low birth weight, not elsewhere classified

Includes

• the listed conditions, without further specification, as the cause of morbidity or additional care, in newborn

Notes

• When both birth weight and gestational age of the newborn are available, both should be coded with birth weight sequenced before gestational age

Applies from P07.2 Extreme immaturity of newborn

Applicable to

• Less than 28 completed weeks (less than 196 completed days) of gestation.

MS-DRG index

Defines the logic of DRG(s) 790 in MDC 15.

Approximate ICD-9-CM (GEMs)

• 765.21 Less than 24 completed weeks of gestation (approximate)

Diagnosis Index entries for P07.21

• Immaturity (less than 37 completed weeks) › extreme of newborn (less than 28 completed weeks of gestation) (less than 196 completed days of gestation) (unspecified weeks of gestation) › gestational age › less than 23 completed weeks

Nearby codes

• P07.16 Other low birth weight newborn, 1500-1749 grams
• P07.17 Other low birth weight newborn, 1750-1999 grams
• P07.18 Other low birth weight newborn, 2000-2499 grams
• P07.2 Extreme immaturity of newborn
• P07.20 Extreme immaturity of newborn, unspecified weeks of gestation
• P07.21 Extreme immaturity of newborn, gestational age less than 23 completed weeks (this code)
• P07.22 Extreme immaturity of newborn, gestational age 23 completed weeks
• P07.23 Extreme immaturity of newborn, gestational age 24 completed weeks
• P07.24 Extreme immaturity of newborn, gestational age 25 completed weeks
• P07.25 Extreme immaturity of newborn, gestational age 26 completed weeks
• P07.26 Extreme immaturity of newborn, gestational age 27 completed weeks