MCMCB Pro
S72.126K

S72.126KNondisplaced fracture of lesser trochanter of unspecified femur, subsequent encounter for closed fracture with nonunion

Billable / specific codeICD-10-CMPOA exempt

S72.126K is a billable, specific ICD-10-CM code for nondisplaced fracture of lesser trochanter of unspecified femur, subsequent encounter for closed fracture with nonunion. It is valid for submission on a claim.

7th character "K" — subsequent encounter for closed fracture with nonunion

The appropriate 7th character is to be added to all codes from category S72

A
initial encounter for closed fracture
B
initial encounter for open fracture type I or II
C
initial encounter for open fracture type IIIA, IIIB, or IIIC
D
subsequent encounter for closed fracture with routine healing
E
subsequent encounter for open fracture type I or II with routine healing
F
subsequent encounter for open fracture type IIIA, IIIB, or IIIC with routine healing
G
subsequent encounter for closed fracture with delayed healing
H
subsequent encounter for open fracture type I or II with delayed healing
J
subsequent encounter for open fracture type IIIA, IIIB, or IIIC with delayed healing
K
subsequent encounter for closed fracture with nonunion
M
subsequent encounter for open fracture type I or II with nonunion
N
subsequent encounter for open fracture type IIIA, IIIB, or IIIC with nonunion
P
subsequent encounter for closed fracture with malunion
Q
subsequent encounter for open fracture type I or II with malunion
R
subsequent encounter for open fracture type IIIA, IIIB, or IIIC with malunion
S
sequela

Risk adjustment

S72.126K does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.

Medicare coverage

S72.126K is named in 1 Medicare coverage policy 1 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.

  • A57765Billing and Coding: Major Joint Replacement (Hip and Knee)

Related codes at this level

Codes that share S72.126. If S72.126K is not quite right, the correct code is usually one of these.

Questions about S72.126K

Is S72.126K a billable ICD-10-CM code?
Yes. S72.126K is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does S72.126K sit in the tabular list?
Injury, poisoning and certain other consequences of external causes (S00-T88), in the block Injuries to the hip and thigh (S70-S79).
ICD-10-CMFY2026-Apr· effective April 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release — see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.