M84.331 — Stress fracture, right ulna
Is M84.331 billable?
No — M84.331 is a non-billable header code. M84.331 groups more specific codes and cannot be submitted on a claim. A valid ICD-10-CM code must be reported at the highest level of specificity available in its branch. Select one of the 6 billable codes beneath M84.331.
Billable codes under this header
- M84.331AStress fracture, right ulna, initial encounter for fracture
- M84.331DStress fracture, right ulna, subsequent encounter for fracture with routine healing
- M84.331GStress fracture, right ulna, subsequent encounter for fracture with delayed healing
- M84.331KStress fracture, right ulna, subsequent encounter for fracture with nonunion
- M84.331PStress fracture, right ulna, subsequent encounter for fracture with malunion
- M84.331SStress fracture, right ulna, sequela
M84.331 at a glance
| Code | M84.331 |
|---|---|
| Description | Stress fracture, right ulna |
| Billable | No — header code |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
How is M84.331 listed in the Alphabetic Index?
The Alphabetic Index lists these routes under M84.33, the nearest indexed parent of M84.331. Use them to find the family, then select the specific code.
- Fracture, traumatic › stress › radius (abduction) (adduction) (separation)
- Fracture, traumatic › stress › ulna (abduction) (adduction) (separation)
Excludes1 — never code together — inherited from M84.3
The conditions below can never be reported together with M84.331 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
Use additional code — inherited from M84.3
Report an additional code alongside M84.331 to fully describe the condition. M84.331 is sequenced first.
- external cause code(s) to identify the cause of the stress fracture
Excludes2 — not included here — inherited from Chapter 13
The conditions below are not part of M84.331, but a patient may have both at the same time. When documentation supports it, M84.331 and the excluded code may both be reported.
- arthropathic psoriasis (L40.5-)
- certain conditions originating in the perinatal period (P04-P96)
- certain infectious and parasitic diseases (A00-B99)
- compartment syndrome (traumatic) (T79.A-)
- complications of pregnancy, childbirth and the puerperium (O00-O9A)
- congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
- endocrine, nutritional and metabolic diseases (E00-E88)
- injury, poisoning and certain other consequences of external causes (S00-T88)
- neoplasms (C00-D49)
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
Excludes2 — not included here — inherited from M84
The conditions below are not part of M84.331, but a patient may have both at the same time. When documentation supports it, M84.331 and the excluded code may both be reported.
- traumatic fracture of bone-see fracture, by site
Excludes2 — not included here — inherited from M84.3
The conditions below are not part of M84.331, but a patient may have both at the same time. When documentation supports it, M84.331 and the excluded code may both be reported.
What codes fall under M84.331? (6)
- M84.331AStress fracture, right ulna, initial encounter for fracture
- M84.331DStress fracture, right ulna, subsequent encounter for fracture with routine healing
- M84.331GStress fracture, right ulna, subsequent encounter for fracture with delayed healing
- M84.331KStress fracture, right ulna, subsequent encounter for fracture with nonunion
- M84.331PStress fracture, right ulna, subsequent encounter for fracture with malunion
- M84.331SStress fracture, right ulna, sequela
How long has M84.331 existed?
M84.331 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.