ICDcodes.org
FY2027

M24.6 — Ankylosis of joint

Not billable

Is M24.6 billable?

No — M24.6 is a non-billable header code. M24.6 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 26 billable codes beneath M24.6.

Billable codes under this header

M24.6 at a glance

CodeM24.6
DescriptionAnkylosis of joint
BillableNo — header code
Code setICD-10-CM FY2027
Valid for encountersOctober 1, 2026 – September 30, 2027

Excludes1 — never code together

The conditions below can never be reported together with M24.6 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.

  • stiffness of joint without ankylosis (M25.6-)

Excludes2 — not included here

The conditions below are not part of M24.6, but a patient may have both at the same time. When documentation supports it, M24.6 and the excluded code may both be reported.

Excludes1 — never code together — inherited from M24

The conditions below can never be reported together with M24.6 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.

  • current injury - see injury of joint by body region

Excludes2 — not included here — inherited from Chapter 13

The conditions below are not part of M24.6, but a patient may have both at the same time. When documentation supports it, M24.6 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 M20-M25

The conditions below are not part of M24.6, but a patient may have both at the same time. When documentation supports it, M24.6 and the excluded code may both be reported.

  • joints of the spine (M40-M54)

Excludes2 — not included here — inherited from M24

The conditions below are not part of M24.6, but a patient may have both at the same time. When documentation supports it, M24.6 and the excluded code may both be reported.

What codes fall under M24.6? (9)

How long has M24.6 existed?

M24.6 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.

What other codes are in the M24 family? (9)