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D89.89

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Other specified disorders involving the immune mechanism, not elsewhere classified

Filed alongside this entry 305

under Disorder (of)

Index entries, exactly as the book files them. This says they are listed together — not that any of them is documented in your chart.

Billable FY2027 2026-10-01 → 2027-09-30
How to use this page

Everything the published sources say about one code, on one page.

  1. Read the Excludes1 block first — it is the one that stops you coding this at all alongside another code.
  2. Excludes2, Code first, Use additional and Includes follow. A note inherited from a parent category is labelled with the category it came from, so you can see why it applies.
  3. Official Guidelines sit below. "Guidelines naming this code" cite the code or a range containing it; "Chapter guidance" is the general guidance for its chapter and is the weaker signal.
  4. Guideline text is quoted verbatim with its section number and page, so you can check it against the published document.
  5. Risk-model chips show which published CMS models map this code.

What this page does not do

  • Guidance is quoted, never paraphrased — a paraphrase of a coding rule is a different rule.
  • Medication candidates, where shown, are matched by condition *name* and are offered as candidates for you to judge. They are not "the drugs for this code".

All page guides →

Exclusions16never code together
D89code
Excludes1
  • hyperglobulinemia NOS (R77.1)R77.1
  • monoclonal gammopathy (of undetermined significance) (D47.2)D47.2
Excludes2
  • transplant failure and rejection (T86.-)T86.-
D89.89code
Excludes1
  • human immunodeficiency virus disease (B20)B20
D80-D89block
Excludes1
  • autoimmune disease (systemic) NOS (M35.9)M35.9
  • functional disorders of polymorphonuclear neutrophils (D71-)D71-
Excludes2
  • human immunodeficiency virus [HIV] disease (B20)B20
D50-D89chapter
Excludes2
  • autoimmune disease (systemic) NOS (M35.9)M35.9
  • certain conditions originating in the perinatal period (P00-P96)P00-P96
  • complications of pregnancy, childbirth and the puerperium (O00-O9A)O00-O9A
  • congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)Q00-Q99
  • endocrine, nutritional and metabolic diseases (E00-E88)E00-E88
  • human immunodeficiency virus [HIV] disease (B20)B20
  • injury, poisoning and certain other consequences of external causes (S00-T88)S00-T88
  • neoplasms (C00-D49)C00-D49
  • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)R00-R94

Excludes1 — never code together. The excluded condition and this one are mutually exclusive.

Excludes2 — not included here, but the patient may have both. Code both when documented.

Instructional notes3
D80-D89block
Includes
  • defects in the complement system
  • immunodeficiency disorders, except human immunodeficiency virus [HIV] disease
  • sarcoidosis
Official Guidelines1names this code

ICD-10-CM Official Guidelines for Coding and Reporting, quoted in full. Published by CMS and NCHS; in the public domain.

I.C.3 Chapter 3: Disease of the blood and blood-forming organs and certain disorders involving the immune mechanism (D50-D89) names this code p.39

Reserved for future guideline expansion

Index entries leading here4
  • Disorder (of) — see also Disease
  • PANDAS (pediatric autoimmune neuropsychiatric disorders associated with streptococcal infections syndrome) D89.89
  • PANS (Pediatric Acute-onset Neuropsychiatric Syndrome) D89.89
  • Syndrome — see also Disease
    • pediatric acute-onset neuropsychiatric (PANS) D89.89
    • pediatric autoimmune neuropsychiatric disorders associated with streptococcal infections (PANDAS) D89.89
Alongside this code4same parent — D89.8
D89.81 Graft-versus-host disease category D89.82 Autoimmune lymphoproliferative syndrome [ALPS] D89.83 Cytokine release syndrome category D89.84 IgG4-related disease
Additional references
AHA Coding Clinic® Licence required

Official coding advice for this code. Published by the American Hospital Association. Not included in this installation.

Risk adjustment

CMS22HCC47 ESRD21HCC47 ESRD24HCC47 HHS08HHS_HCC074 RX08HCC99

Presence is a property of the code. Untick a model to hide it everywhere.

This code

Billable
yes
Code set
FY2027
Parent
D89.8
Block
D80-D89
Siblings
4

Present FY2018–FY2027.