2027 ICD-10-CM Diagnosis Code B94.9Sequelae of unspecified infectious and parasitic disease
ICD-10-CM Codes›A00–B99›B90-B94›B94
- Billable — Valid for Submission
- POA Exempt
- Not Chronic
B94.9 is a billable ICD-10-CM diagnosis code for sequelae of unspecified infectious and parasitic disease. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 867 through 869. The code is exempt from POA reporting. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Sequela of specified infectious disease conditions.
Code Identity
Code Classification
Present on Admission (POA)Billing
B94.9 is exempt from POA reporting on inpatient claims to general acute care hospitals. Review the other POA exempt codes in Sequelae of infectious and parasitic diseases (B90-B94).
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Acquired bronchiectasis
- Acute febrile neutrophilic dermatosis
- Arthropathy associated with bacterial disease
- Avascular necrosis of bone as late effect of osteomyelitis
- Chorea due to and following infective disorder
- Cicatrizing conjunctivitis
- Fatal post-viral neurodegenerative disorder
- Fibrosis of pleura
- Gastrointestinal sequelae of disorders
- Gingival recession following infectious disease
- Hydroa vacciniforme-like lymphoma
- Hydrocephalus following infectious disease
- Hypersensitivity disorder mediated by immune complex
- Hypotrichosis following infectious disease
- Immunoglobulin A vasculitis
- Infection-associated purpura
- Infectious sequelae of disorders
- Intercostal neuralgia
- Intercostal neuropathy
- Kyphosis due to and following infection
- Lordosis deformity of spine due to and following infection
- Neoplastic sequelae of disorders
- Neuroretinitis
- Neuroretinitis following infectious disease
- Parkinsonism following infection
- Paroxysmal cold hemoglobinuria
- Post infectious grand mal epilepsy
- Post infectious osteoarthritis
- Post infectious thrombocytopenic purpura
- Post-bacterial arthropathy
- Postinfectious ataxia
- Post-infectious cicatrizing conjunctivitis
- Post-infectious cold agglutinin disease
- Post-infectious disorder
- Post-infectious glomerulonephritis
- Post-infectious glomerulonephritis - Garland variety
- Postinfectious neuralgia
- Postinfectious osteopathy
- Post-infectious scleredema
- Post-infective bronchiectasis
- Post-infective hypomelanosis
- Post-infective hypopituitarism
- Postinfective immunoglobulin A vasculitis
- Postinfective intercostal neuralgia
- Post-infective malabsorption
- Post-infective myelitis
- Postinfective peripheral neuralgia
- Post-infective pleural fibrosis
- Postinfective segmental neuralgia
- Postviral depression
- Post-viral paroxysmal cold hemoglobinuria
- Scleredema
- Scoliosis due to and following infection
- Secondary cold-type hemolytic anemia
- Secondary kyphosis
- Secondary paroxysmal cold hemoglobinuria
- Secondary tic disorder
- Segmental peripheral neuralgia
- Sequela of infection caused by bacterium
- Sequelae of infectious disease
- Shunt nephritis
- Sweet's disease following infection
- Thickening of skin
- Tic due to and following infection
Instructional NotesGuidance
Instructions from the official ICD-10-CM Tabular List that apply to B94.9: its own notes plus those printed at block B90-B94 and Chapter 1. A note printed at a category, block or chapter applies to every code under it.
Includes
Further defines, or gives examples of, the content of the category.
- diseases generally recognized as communicable or transmissible
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.
- post COVID-19 condition (U09.9)
- carrier or suspected carrier of infectious disease (Z22.-)
- certain localized infections - see body system-related chapters
- infectious and parasitic diseases complicating pregnancy, childbirth and the puerperium (O98.-)
- infectious and parasitic diseases specific to the perinatal period (P35-P39)
- influenza and other acute respiratory infections (J00-J22)
Code First
The underlying condition named in the note is sequenced before this code.
- condition resulting from (sequela) the infectious or parasitic disease
Use Additional Code
Add a second code, after this one, to fully describe the condition.
- code to identify resistance to antimicrobial drugs (Z16.-)
Notes
General instructions on how these codes are used.
- Categories B90-B94 are to be used to indicate conditions in categories A00-B89 as the cause of sequelae, which are themselves classified elsewhere. The 'sequelae' include conditions specified as such; they also include residuals of diseases classifiable to the above categories if there is evidence that the disease itself is no longer present. Codes from these categories are not to be used for chronic infections. Code chronic current infections to active infectious disease as appropriate.
Source: CMS ICD-10-CM Tabular List. How to read instructional notes.
Referenced in Other NotesGuidance
Instructional notes printed at other codes that name B94.9, its category, or a range that includes it.
Excludes1 1
These codes carry an Excludes1 note naming B94.9: they are not reported together with it, unless the two conditions are unrelated.
- Z86.1 Personal history of infectious and parasitic diseases
Notes 1
These notes mention B94.9.
- Block B90-B94 Sequelae of infectious and parasitic diseasesCategories B90-B94 are to be used to indicate conditions in categories A00-B89 as the cause of sequelae, which are themselves classified elsewhere. The 'sequelae' include conditions specified as such; they also include residuals of diseases classifiable to the above categories if there is evidence that the disease itself is no longer present. Codes from these categories are not to be used for chronic infections. Code chronic current infections to active infectious disease as appropriate. names B90-B94, which includes this code
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
Sequelae (of) See Also: condition;
infectious disease B94.9
parasitic disease B94.9
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Patient EducationClinical
Infectious Diseases
Germs, or microbes, are found everywhere - in the air, soil, and water. There are also germs on your skin and in your body. Many of them are harmless, and some can even be helpful. But some of them can make you sick. Infectious diseases are diseases that are caused by germs.
The full article covers:
- What are infectious diseases?
- What are the different types of germs that cause infectious diseases?
- How can you get infectious diseases?
- What are the symptoms of infectious diseases?
- What are the treatments for infectious diseases?
- Can infectious diseases be prevented?
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Convert B94.9 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About B94.9Overview
What is the ICD-10 code for sequelae of unspecified infectious and parasitic disease?
The ICD-10-CM code for sequelae of unspecified infectious and parasitic disease is B94.9 (sometimes written as B949). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
Is B94.9 a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report sequelae of unspecified infectious and parasitic disease on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
What MS-DRG does B94.9 group to?
When sequelae of unspecified infectious and parasitic disease is the principal diagnosis on an inpatient stay, it groups to MS-DRG 867, 869, 868, with relative weights from 0.6784 to 2.1855 depending on complications. Higher weights mean higher Medicare reimbursement.
Is B94.9 exempt from POA reporting?
Yes. CMS lists this code among those exempt from present on admission reporting, so hospitals do not assign a POA indicator for sequelae of unspecified infectious and parasitic disease on inpatient claims. The code appears in the Sequelae of infectious and parasitic diseases (B90-B94) range of the CMS exempt list.
What is the ICD-9 equivalent of B94.9?
Under the General Equivalence Mappings, sequelae of unspecified infectious and parasitic disease converts to ICD-9-CM 139.8 (late eff infect dis NEC). The mapping is approximate, so confirm the match fits the documentation.
