ICD-10-CM 7th Character Values · FY 2027 5 Values

7th Character Values: Coma Scale Timing ICD-10-CM

Records when the Glasgow coma scale score was assessed: in the field, at arrival to the emergency department, at hospital admission, or 24 hours or more after admission. In FY 2027 4 categories use this set, covering 95 complete codes.

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

Values

What Each Value Means 5 values

Character	Meaning
0	unspecified time
1	in the field [EMT or ambulance]
2	at arrival to emergency department
3	at hospital admission
4	24 hours or more after hospital admission

ICD-10-CM

Categories That Use These Values 4 categories

Category	Title	Chapter	Codes
R40.21	Coma scale, eyes open	Ch. 18	20
R40.22	Coma scale, best verbal response	Ch. 18	25
R40.23	Coma scale, best motor response	Ch. 18	30
R40.24	Glasgow coma scale, total score	Ch. 18	20

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 R40.21 ends in 0 for unspecified time. “Codes” counts the complete 7-character codes.

Other 7th Character Value Sets

Encounter: Initial, Subsequent, Sequela Eye Laterality Closed Fracture Encounter Fetus Identification Glaucoma Stage Pathological Fracture Encounter Open or Closed Fracture Encounter 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 mean?

In this set: 0 (unspecified time); 1 (in the field [EMT or ambulance]); 2 (at arrival to emergency department); 3 (at hospital admission); 4 (24 hours or more after hospital admission).

Which ICD-10-CM categories use the Coma Scale Timing 7th characters?

4 categories and subcategories use them in FY 2027, covering 95 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.