ICDcodes.org
FY2027

M43.8X6 — Other specified deforming dorsopathies, lumbar region

BillableUnspecified

Is M43.8X6 billable?

Yes, but M43.8X6 is an unspecified code. M43.8X6 is a valid, billable ICD-10-CM code for encounters from October 1, 2026 through September 30, 2027. However, M43.8X6 is an unspecified or catch-all code. Payers apply additional scrutiny to unspecified codes and many deny them when the medical record supports a more specific option, so check the documentation before selecting M43.8X6 — the more specific alternatives are listed below.

M43.8X6 at a glance

CodeM43.8X6
DescriptionOther specified deforming dorsopathies, lumbar region
BillableYes
Code setICD-10-CM FY2027
Valid for encountersOctober 1, 2026 – September 30, 2027

Which MS-DRGs does M43.8X6 group to?

M43.8X6 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.

  • 456Spinal Fusion Except Cervical with Spinal Curvature, Malignancy, or Infection with MCCsurgical
  • 457Spinal Fusion Except Cervical with Spinal Curvature, Malignancy, or Infection with CCsurgical
  • 458Spinal Fusion Except Cervical with Spinal Curvature, Malignancy, or Infection without CC/MCCsurgical

How is M43.8X6 listed in the Alphabetic Index?

The Alphabetic Index lists these routes under M43.8, the nearest indexed parent of M43.8X6. Use them to find the family, then select the specific code.

  • Angulation › sacrum

Excludes1 — never code together — inherited from M43

The conditions below can never be reported together with M43.8X6 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.

  • congenital spondylolysis and spondylolisthesis (Q76.2)
  • hemivertebra (Q76.3-Q76.4)
  • Klippel-Feil syndrome (Q76.1)
  • lumbarization and sacralization (Q76.4)
  • platyspondylisis (Q76.4)
  • spina bifida occulta (Q76.0)
  • spinal curvature in osteoporosis (M80.-)
  • spinal curvature in Paget's disease of bone [osteitis deformans] (M88.-)

Excludes2 — not included here — inherited from Chapter 13

The conditions below are not part of M43.8X6, but a patient may have both at the same time. When documentation supports it, M43.8X6 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 M43.8

The conditions below are not part of M43.8X6, but a patient may have both at the same time. When documentation supports it, M43.8X6 and the excluded code may both be reported.

How long has M43.8X6 existed?

M43.8X6 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 M43.8X family? (8)