2027 ICD-10-CM Diagnosis Code M89.08Algoneurodystrophy, other site

ICD-10-CM Codes›M00–M99›M86-M90›M89

ICD-10-CM M89.08
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

M89.08 is a billable ICD-10-CM diagnosis code for algoneurodystrophy, other site. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 564 through 566. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Other specified bone disease and musculoskeletal deformities.

Code Identity

ICD-10-CM Code
M89.08
Billable Status
Yes — Valid for Submission
Code Describes
Algoneurodystrophy, other site
Short Description
Algoneurodystrophy, other site
Same as the full description in the CMS dataset.
Parent Code
M89.0
Algoneurodystrophy

Code Classification

ChapterM00–M99Diseases of the musculoskeletal system and connective tissue
SectionM86-M90Other osteopathies
CategoryM89Other disorders of bone
This CodeM89.08Algoneurodystrophy, other site

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to M89.08: its own notes plus those printed at M89.0, block M86-M90, and Chapter 13. A note printed at a category, block or chapter applies to every code under it.

Excludes1

Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.

From M89.0 Algoneurodystrophy applies to 24 codes
  • causalgia, lower limb (G57.7-)
  • causalgia, upper limb (G56.4-)
  • complex regional pain syndrome II, lower limb (G57.7-)
  • complex regional pain syndrome II, upper limb (G56.4-)
  • reflex sympathetic dystrophy (G90.5-)
From Block M86-M90 Other osteopathies applies to 732 codes
  • postprocedural osteopathies (M96.-)

Excludes2

Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.

From Chapter 13 (M00-M99) Diseases of the musculoskeletal system and connective tissue applies to 6,687 codes
  • 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)

Notes

General instructions on how these codes are used.

From Chapter 13 (M00-M99) Diseases of the musculoskeletal system and connective tissue applies to 6,687 codes
  • Use an external cause code following the code for the musculoskeletal condition, if applicable, to identify the cause of the musculoskeletal condition

Source: CMS ICD-10-CM Tabular List. How to read instructional notes.

Referenced in Other NotesGuidance

Instructional notes printed at other codes that name M89.08, its category, or a range that includes it.

Excludes1 2

These codes carry an Excludes1 note naming M89.08: they are not reported together with it, unless the two conditions are unrelated.

  • M81 Osteoporosis without current pathological fracture
    Sudeck's atrophy (M89.0) names M89.0, which includes this code
  • M81.6 Localized osteoporosis [Lequesne]
    Sudeck's atrophy (M89.0) names M89.0, which includes this code

Excludes2 1

These codes carry an Excludes2 note naming M89.08: its condition is not part of those codes, and both may be reported when the patient has both.

  • M75 Shoulder lesions
    shoulder-hand syndrome (M89.0-) names M89.0-, which includes this code

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR MUS028
Other specified bone disease and musculoskeletal deformities
Default principal diagnosis: inpatient Yes · outpatient Yes

Patient EducationClinical

Complex Regional Pain Syndrome

Complex regional pain syndrome (CRPS) is a chronic pain condition. It causes intense pain, usually in the arms, hands, legs, or feet. It may happen after an injury, either to a nerve or to tissue in the affected area. Rest and time may only make it worse.

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Convert M89.08 to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
733.7 Algoneurodystrophy
Approximate The match is approximate rather than exact.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About M89.08Overview

What is the ICD-10 code for algoneurodystrophy, other site?

The ICD-10-CM code for algoneurodystrophy, other site is M89.08 (sometimes written as M8908). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

Is M89.08 (Algoneurodystrophy) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report algoneurodystrophy, other site on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

What MS-DRG does M89.08 group to?

When algoneurodystrophy, other site is the principal diagnosis on an inpatient stay, it groups to MS-DRG 564, 566, 565, with relative weights from 0.7374 to 1.4909 depending on complications. Higher weights mean higher Medicare reimbursement.

Can M89.08 be reported with a code from G57.7?

Not as a rule. The Excludes1 note at M89.0, which applies to M89.08, lists "causalgia, lower limb (G57.7-)". An Excludes1 note means the excluded code is never reported together with this one; the only exception is when the two conditions are unrelated to each other (Official Guidelines, Section I.A.12.a).

What is the ICD-9 equivalent of M89.08?

Under the General Equivalence Mappings, algoneurodystrophy, other site converts to ICD-9-CM 733.7 (algoneurodystrophy). The mapping is approximate, so confirm the match fits the documentation.