S72.321M — Displaced transverse fracture of shaft of right femur, subsequent encounter for open fracture type I or II with nonunion

BillableCC

Is S72.321M billable?

Yes — S72.321M is billable for FY2027. S72.321M is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. S72.321M may be submitted for encounters from October 1, 2026 through September 30, 2027.

S72.321M at a glance

Code	S72.321M
Description	Displaced transverse fracture of shaft of right femur, subsequent encounter for open fracture type I or II with nonunion
Billable	Yes
Code set	ICD-10-CM FY2027
Valid for encounters	October 1, 2026 – September 30, 2027
7th character "M"	subsequent encounter for open fracture type I or II with nonunion

What does the 7th character "M" mean in S72.321M?

In S72.321M, the 7th character M means subsequent encounter for open fracture type I or II with nonunion. The 7th character is required for S72.321M to be a valid, complete code.

Same condition, different episode of care — switch the 7th character:

Which MS-DRGs does S72.321M group to?

S72.321M sits in MDC 08 and helps define the logic of 3 MS-DRGs (version 44, FY2027). Which one a stay actually groups to also depends on procedures and secondary diagnoses.

564Other Musculoskeletal System and Connective Tissue Diagnoses with MCCmedical
565Other Musculoskeletal System and Connective Tissue Diagnoses with CCmedical
566Other Musculoskeletal System and Connective Tissue Diagnoses without CC/MCCmedical

As a secondary diagnosis, S72.321M is a complication or comorbidity (CC), which can move a stay into a higher-paying DRG.

How is S72.321M listed in the Alphabetic Index?

The Alphabetic Index lists these routes under S72.32, the nearest indexed parent of S72.321M. Use them to find the family, then select the specific code.

Fracture, traumatic › femur, femoral › shaft › transverse (abduction) (adduction) (separation)
Fracture, traumatic › femur, femoral › shaft › transverse › nondisplaced (abduction) (adduction) (separation)

Excludes1 — never code together — inherited from S72

The conditions below can never be reported together with S72.321M on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.

traumatic amputation of hip and thigh (S78.-)

Use additional code — inherited from Chapter 19

Report an additional code alongside S72.321M to fully describe the condition. S72.321M is sequenced first.

code to identify any retained foreign body, if applicable (Z18.-)

Excludes2 — not included here — inherited from Chapter 19

The conditions below are not part of S72.321M, but a patient may have both at the same time. When documentation supports it, S72.321M and the excluded code may both be reported.

birth trauma (P10-P15)
obstetric trauma (O70-O71)

Excludes2 — not included here — inherited from S70-S79

The conditions below are not part of S72.321M, but a patient may have both at the same time. When documentation supports it, S72.321M and the excluded code may both be reported.

burns and corrosions (T20-T32)
frostbite (T33-T34)
snake bite (T63.0-)
venomous insect bite or sting (T63.4-)

Excludes2 — not included here — inherited from S72

The conditions below are not part of S72.321M, but a patient may have both at the same time. When documentation supports it, S72.321M and the excluded code may both be reported.

fracture of lower leg and ankle (S82.-)
fracture of foot (S92.-)
periprosthetic fracture of prosthetic implant of hip (M97.0-)

How long has S72.321M existed?

S72.321M has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.

Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.