ICD-10-CM 7th Character Values · FY 2027 7 Values

7th Character Values: Fetus Identification ICD-10-CM

Identifies which fetus is affected in a multiple gestation: 0 not applicable or unspecified, 1 through 5 for fetus 1 to 5, and 9 for other fetus. In FY 2027 15 categories use this set, covering 1,260 complete codes.

✓ From the official FY 2027 ICD-10-CM Tabular ListDefinitions follow the Official Guidelines, Section I.A

Values

What Each Value Means 7 values

Character	Meaning
0	not applicable or unspecified
1	fetus 1
2	fetus 2
3	fetus 3
4	fetus 4
5	fetus 5
9	other fetus

ICD-10-CM

Categories That Use These Values 15 categories

15 of 15 shown

Category	Title	Chapter	Codes
O31	Complications specific to multiple gestation	Ch. 15	168
O32	Maternal care for malpresentation of fetus	Ch. 15	56
O33.3	Maternal care for disproportion due to outlet contraction of pelvis	Ch. 15	7
O33.4	Maternal care for disproportion of mixed maternal and fetal origin	Ch. 15	7
O33.5	Maternal care for disproportion due to unusually large fetus	Ch. 15	7
O33.6	Maternal care for disproportion due to hydrocephalic fetus	Ch. 15	7
O33.7	Maternal care for disproportion due to other fetal deformities	Ch. 15	7
O35	Maternal care for known or suspected fetal abnormality and damage	Ch. 15	231
O36	Maternal care for other fetal problems	Ch. 15	399
O40	Polyhydramnios	Ch. 15	28
O41	Other disorders of amniotic fluid and membranes	Ch. 15	168
O60.1	Preterm labor with preterm delivery	Ch. 15	28
O60.2	Term delivery with preterm labor	Ch. 15	21
O64	Obstructed labor due to malposition and malpresentation of fetus	Ch. 15	56
O69	Labor and delivery complicated by umbilical cord complications	Ch. 15	70

Every code under these categories takes one of the values above in the seventh position, with X placeholders when the code is shorter than six characters. For example, a code under O31 ends in 0 for not applicable or unspecified. “Codes” counts the complete 7-character codes.

Other 7th Character Value Sets

Encounter: Initial, Subsequent, Sequela Eye Laterality Closed Fracture Encounter Glaucoma Stage Pathological Fracture Encounter Open or Closed Fracture Encounter Coma Scale Timing Skull, Spine and Pelvis Fracture Encounter Open Fracture Type Encounter Retinal Vein Occlusion Status Vertebral Fracture Encounter Dry Macular Degeneration Stage Wet Macular Degeneration Stage Chronic Gout Tophus

Questions About These 7th Characters

What do the 7th characters 0, 1, 2, 3, 4, 5, 9 mean?

In this set: 0 (not applicable or unspecified); 1 (fetus 1); 2 (fetus 2); 3 (fetus 3); 4 (fetus 4); 5 (fetus 5); 9 (other fetus).

Which ICD-10-CM categories use the Fetus Identification 7th characters?

15 categories and subcategories use them in FY 2027, covering 1,260 codes. The table above lists each one with its chapter and code count.

What if the code is shorter than six characters?

Fill the empty positions with the placeholder X so the 7th character is in the seventh position. A code that requires a 7th character is invalid without it (Sections I.A.4 and I.A.5).

Related References

ICD-10-CM Official Guidelines ICD-10-CM Code Lookup ICD-10-CM Codes List Code Lists by Tag

Source: FY 2027 ICD-10-CM Tabular List (CMS and NCHS) and the ICD-10-CM Official Guidelines for Coding and Reporting FY 2027, Section I.A. ICD List is not affiliated with CMS or NCHS.