D77 — Other disorders of blood and blood-forming organs in diseases classified elsewhere
Is D77 billable?
Yes — D77 is billable for FY2027. D77 is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. D77 may be submitted for encounters from October 1, 2026 through September 30, 2027.
D77 at a glance
| Code | D77 |
|---|---|
| Description | Other disorders of blood and blood-forming organs in diseases classified elsewhere |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
What Medicare edits apply to D77?
The Medicare Code Editor screens inpatient claims before they are grouped. These edits name D77 directly.
This code describes a manifestation of an underlying disease. The underlying condition must be sequenced before it, so it can never be the principal or first-listed diagnosis.
Which MS-DRGs does D77 group to?
D77 sits in MDC 16 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.
- 814Reticuloendothelial and Immunity Disorders with MCCmedical
- 815Reticuloendothelial and Immunity Disorders with CCmedical
- 816Reticuloendothelial and Immunity Disorders without CC/MCCmedical
How is D77 listed in the Alphabetic Index?
These are the routes through the Alphabetic Index that lead to D77. They show the wording a clinician may have documented, which often differs from the Tabular description.
- Purpura › scorbutic
- Splenitis › malarial (interstitial) (malignant) (nonspecific)
- Splenomegaly, splenomegalia › malarial (Bengal) (cryptogenic) (idiopathic) (tropical)
- Cyst › spleen NEC › hydatid (colloid) (mucous) (simple) (retention)
- Degeneration, degenerative › spleen › amyloid
- Disease, diseased › spleen › amyloid
- Disorder › blood › in congenital early syphilis (of)
- Fibrosis, fibrotic › spleen › in schistosomiasis
- Splenomegaly, splenomegalia › syphilitic › congenital (Bengal) (cryptogenic) (idiopathic) (tropical)
Excludes1 — never code together
The conditions below can never be reported together with D77 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
Code first
The underlying condition below must be sequenced before D77. D77 describes a manifestation and cannot be the principal or first-listed diagnosis.
Excludes2 — not included here — inherited from Chapter 3
The conditions below are not part of D77, but a patient may have both at the same time. When documentation supports it, D77 and the excluded code may both be reported.
- autoimmune disease (systemic) NOS (M35.9)
- certain conditions originating in the perinatal period (P00-P96)
- complications of pregnancy, childbirth and the puerperium (O00-O9A)
- congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
- endocrine, nutritional and metabolic diseases (E00-E88)
- human immunodeficiency virus [HIV] disease (B20)
- 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)
How long has D77 existed?
D77 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.
Which codes are confused with D77?
ICD-10-CM declares these codes mutually exclusive with D77 — exactly one of each pair can be correct for a given encounter.