M90.5 — Osteonecrosis in diseases classified elsewhere

Not billable

Is M90.5 billable?

No — M90.5 is a non-billable header code. M90.5 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 24 billable codes beneath M90.5.

Billable codes under this header

M90.5 at a glance

Code	M90.5
Description	Osteonecrosis in diseases classified elsewhere
Billable	No — header code
Code set	ICD-10-CM FY2027
Valid for encounters	October 1, 2026 – September 30, 2027

Code first

The underlying condition below must be sequenced before M90.5. M90.5 describes a manifestation and cannot be the principal or first-listed diagnosis.

underlying disease, such as:
caisson disease (T70.3)
hemoglobinopathy (D50-D64)

Excludes1 — never code together — inherited from M86-M90

The conditions below can never be reported together with M90.5 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.

postprocedural osteopathies (M96.-)

Excludes1 — never code together — inherited from M90

The conditions below can never be reported together with M90.5 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.

osteochondritis, osteomyelitis, and osteopathy (in):
cryptococcosis (B45.3)
diabetes mellitus (E08-E13 with .69-)
gonococcal (A54.43)
neurogenic syphilis (A52.11)
renal osteodystrophy (N25.0)
salmonellosis (A02.24)
secondary syphilis (A51.46)
syphilis (late) (A52.77)

Excludes2 — not included here — inherited from Chapter 13

The conditions below are not part of M90.5, but a patient may have both at the same time. When documentation supports it, M90.5 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)

What codes fall under M90.5? (10)

How long has M90.5 existed?

M90.5 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.